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Finding the Fourth Proportional to 531,442,893.60, 797,164,340.40 and 393,693,386.40

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Solution

The fourth proportional to 531,442,893.60, 797,164,340.40 and 393,693,386.40 is: 590,540,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,442,893.60 : 797,164,340.40 = 393,693,386.40 : x
  2. Step 2: Convert to fraction form
    531,442,893.60/797,164,340.40 = 393,693,386.40/x
  3. Step 3: Cross multiply
    531,442,893.60x = 797,164,340.40 × 393,693,386.40
  4. Step 4: Simplify right side
    531,442,893.60x = 313,838,328,689,398,272
  5. Step 5: Solve for x
    x = 313,838,328,689,398,272/531,442,893.60
  6. Step 6: Final answer
    x = 590,540,079.60

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Double scale
Find fourth proportional to 531,442,894.60, 797,164,341.90 and 393,693,387.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.