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Finding the Fourth Proportional to 99,755.60, 137,643.86 and 59,473.08

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Solution

The fourth proportional to 99,755.60, 137,643.86 and 59,473.08 is: 82,061.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,755.60 : 137,643.86 = 59,473.08 : x
  2. Step 2: Convert to fraction form
    99,755.60/137,643.86 = 59,473.08/x
  3. Step 3: Cross multiply
    99,755.60x = 137,643.86 × 59,473.08
  4. Step 4: Simplify right side
    99,755.60x = 8,186,104,445.97
  5. Step 5: Solve for x
    x = 8,186,104,445.97/99,755.60
  6. Step 6: Final answer
    x = 82,061.61

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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.