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Finding the Fourth Proportional to 531,966.40, 797,949.60 and 391,998.40

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Solution

The fourth proportional to 531,966.40, 797,949.60 and 391,998.40 is: 587,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,966.40 : 797,949.60 = 391,998.40 : x
  2. Step 2: Convert to fraction form
    531,966.40/797,949.60 = 391,998.40/x
  3. Step 3: Cross multiply
    531,966.40x = 797,949.60 × 391,998.40
  4. Step 4: Simplify right side
    531,966.40x = 312,794,966,480.64
  5. Step 5: Solve for x
    x = 312,794,966,480.64/531,966.40
  6. Step 6: Final answer
    x = 587,997.60

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Half scale
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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.