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Finding the Fourth Proportional to 71,350.88, 106,398.26 and 66,364.52

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Solution

The fourth proportional to 71,350.88, 106,398.26 and 66,364.52 is: 98,962.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,350.88 : 106,398.26 = 66,364.52 : x
  2. Step 2: Convert to fraction form
    71,350.88/106,398.26 = 66,364.52/x
  3. Step 3: Cross multiply
    71,350.88x = 106,398.26 × 66,364.52
  4. Step 4: Simplify right side
    71,350.88x = 7,061,069,453.74
  5. Step 5: Solve for x
    x = 7,061,069,453.74/71,350.88
  6. Step 6: Final answer
    x = 98,962.61

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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.