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Finding the Fourth Proportional to 99,496.80, 137,301.60 and 57,025.92

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Solution

The fourth proportional to 99,496.80, 137,301.60 and 57,025.92 is: 78,693.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,496.80 : 137,301.60 = 57,025.92 : x
  2. Step 2: Convert to fraction form
    99,496.80/137,301.60 = 57,025.92/x
  3. Step 3: Cross multiply
    99,496.80x = 137,301.60 × 57,025.92
  4. Step 4: Simplify right side
    99,496.80x = 7,829,750,057.47
  5. Step 5: Solve for x
    x = 7,829,750,057.47/99,496.80
  6. Step 6: Final answer
    x = 78,693.49

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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.