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Finding the Fourth Proportional to 71,689.76, 106,929.66 and 62,255.60

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Solution

The fourth proportional to 71,689.76, 106,929.66 and 62,255.60 is: 92,858.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,689.76 : 106,929.66 = 62,255.60 : x
  2. Step 2: Convert to fraction form
    71,689.76/106,929.66 = 62,255.60/x
  3. Step 3: Cross multiply
    71,689.76x = 106,929.66 × 62,255.60
  4. Step 4: Simplify right side
    71,689.76x = 6,656,969,606.45
  5. Step 5: Solve for x
    x = 6,656,969,606.45/71,689.76
  6. Step 6: Final answer
    x = 92,858.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.