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Finding the Fourth Proportional to 113,524.71, 156,636.51 and 74,758.53

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Solution

The fourth proportional to 113,524.71, 156,636.51 and 74,758.53 is: 103,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,524.71 : 156,636.51 = 74,758.53 : x
  2. Step 2: Convert to fraction form
    113,524.71/156,636.51 = 74,758.53/x
  3. Step 3: Cross multiply
    113,524.71x = 156,636.51 × 74,758.53
  4. Step 4: Simplify right side
    113,524.71x = 11,709,915,231.93
  5. Step 5: Solve for x
    x = 11,709,915,231.93/113,524.71
  6. Step 6: Final answer
    x = 103,148.60

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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.