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Finding the Fourth Proportional to 113,640.16, 156,820.54 and 62,651.70

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Solution

The fourth proportional to 113,640.16, 156,820.54 and 62,651.70 is: 86,457.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,640.16 : 156,820.54 = 62,651.70 : x
  2. Step 2: Convert to fraction form
    113,640.16/156,820.54 = 62,651.70/x
  3. Step 3: Cross multiply
    113,640.16x = 156,820.54 × 62,651.70
  4. Step 4: Simplify right side
    113,640.16x = 9,825,073,425.92
  5. Step 5: Solve for x
    x = 9,825,073,425.92/113,640.16
  6. Step 6: Final answer
    x = 86,457.76

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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.