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Finding the Fourth Proportional to 113,695.25, 156,900.65 and 62,710.20

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Solution

The fourth proportional to 113,695.25, 156,900.65 and 62,710.20 is: 86,540.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,695.25 : 156,900.65 = 62,710.20 : x
  2. Step 2: Convert to fraction form
    113,695.25/156,900.65 = 62,710.20/x
  3. Step 3: Cross multiply
    113,695.25x = 156,900.65 × 62,710.20
  4. Step 4: Simplify right side
    113,695.25x = 9,839,270,828.08
  5. Step 5: Solve for x
    x = 9,839,270,828.08/113,695.25
  6. Step 6: Final answer
    x = 86,540.74

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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.