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Finding the Fourth Proportional to 531,489,964.40, 797,234,946.60 and 477,920,711.60

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Solution

The fourth proportional to 531,489,964.40, 797,234,946.60 and 477,920,711.60 is: 716,881,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,489,964.40 : 797,234,946.60 = 477,920,711.60 : x
  2. Step 2: Convert to fraction form
    531,489,964.40/797,234,946.60 = 477,920,711.60/x
  3. Step 3: Cross multiply
    531,489,964.40x = 797,234,946.60 × 477,920,711.60
  4. Step 4: Simplify right side
    531,489,964.40x = 381,015,092,991,460,032
  5. Step 5: Solve for x
    x = 381,015,092,991,460,032/531,489,964.40
  6. Step 6: Final answer
    x = 716,881,067.40

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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.