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Finding the Fourth Proportional to 531,971.40, 797,957.10 and 392,003.40

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Solution

The fourth proportional to 531,971.40, 797,957.10 and 392,003.40 is: 588,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,971.40 : 797,957.10 = 392,003.40 : x
  2. Step 2: Convert to fraction form
    531,971.40/797,957.10 = 392,003.40/x
  3. Step 3: Cross multiply
    531,971.40x = 797,957.10 × 392,003.40
  4. Step 4: Simplify right side
    531,971.40x = 312,801,896,254.14
  5. Step 5: Solve for x
    x = 312,801,896,254.14/531,971.40
  6. Step 6: Final answer
    x = 588,005.10

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Double scale
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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.