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Finding the Fourth Proportional to 113,130.60, 169,695.90 and 60,642.60

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Solution

The fourth proportional to 113,130.60, 169,695.90 and 60,642.60 is: 90,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,130.60 : 169,695.90 = 60,642.60 : x
  2. Step 2: Convert to fraction form
    113,130.60/169,695.90 = 60,642.60/x
  3. Step 3: Cross multiply
    113,130.60x = 169,695.90 × 60,642.60
  4. Step 4: Simplify right side
    113,130.60x = 10,290,800,585.34
  5. Step 5: Solve for x
    x = 10,290,800,585.34/113,130.60
  6. Step 6: Final answer
    x = 90,963.90

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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.