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Finding the Fourth Proportional to 531,598.78, 797,398.14 and 137,614.78

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Solution

The fourth proportional to 531,598.78, 797,398.14 and 137,614.78 is: 206,422.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,598.78 : 797,398.14 = 137,614.78 : x
  2. Step 2: Convert to fraction form
    531,598.78/797,398.14 = 137,614.78/x
  3. Step 3: Cross multiply
    531,598.78x = 797,398.14 × 137,614.78
  4. Step 4: Simplify right side
    531,598.78x = 109,733,769,608.51
  5. Step 5: Solve for x
    x = 109,733,769,608.51/531,598.78
  6. Step 6: Final answer
    x = 206,422.16

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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.