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Finding the Fourth Proportional to 99,700.52, 137,583.36 and 59,393.41

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Solution

The fourth proportional to 99,700.52, 137,583.36 and 59,393.41 is: 81,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,700.52 : 137,583.36 = 59,393.41 : x
  2. Step 2: Convert to fraction form
    99,700.52/137,583.36 = 59,393.41/x
  3. Step 3: Cross multiply
    99,700.52x = 137,583.36 × 59,393.41
  4. Step 4: Simplify right side
    99,700.52x = 8,171,544,221.74
  5. Step 5: Solve for x
    x = 8,171,544,221.74/99,700.52
  6. Step 6: Final answer
    x = 81,960.90

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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.