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Finding the Fourth Proportional to 531,780.12, 797,669.78 and 157,803.12

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Solution

The fourth proportional to 531,780.12, 797,669.78 and 157,803.12 is: 236,704.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,780.12 : 797,669.78 = 157,803.12 : x
  2. Step 2: Convert to fraction form
    531,780.12/797,669.78 = 157,803.12/x
  3. Step 3: Cross multiply
    531,780.12x = 797,669.78 × 157,803.12
  4. Step 4: Simplify right side
    531,780.12x = 125,874,779,224.70
  5. Step 5: Solve for x
    x = 125,874,779,224.70/531,780.12
  6. Step 6: Final answer
    x = 236,704.56

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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.