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Finding the Fourth Proportional to 113,617.31, 156,798.92 and 62,629.79

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Solution

The fourth proportional to 113,617.31, 156,798.92 and 62,629.79 is: 86,432.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,617.31 : 156,798.92 = 62,629.79 : x
  2. Step 2: Convert to fraction form
    113,617.31/156,798.92 = 62,629.79/x
  3. Step 3: Cross multiply
    113,617.31x = 156,798.92 × 62,629.79
  4. Step 4: Simplify right side
    113,617.31x = 9,820,283,118.68
  5. Step 5: Solve for x
    x = 9,820,283,118.68/113,617.31
  6. Step 6: Final answer
    x = 86,432.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.