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Finding the Fourth Proportional to 99,410.58, 137,189.13 and 54,091.02

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Solution

The fourth proportional to 99,410.58, 137,189.13 and 54,091.02 is: 74,646.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,410.58 : 137,189.13 = 54,091.02 : x
  2. Step 2: Convert to fraction form
    99,410.58/137,189.13 = 54,091.02/x
  3. Step 3: Cross multiply
    99,410.58x = 137,189.13 × 54,091.02
  4. Step 4: Simplify right side
    99,410.58x = 7,420,699,974.61
  5. Step 5: Solve for x
    x = 7,420,699,974.61/99,410.58
  6. Step 6: Final answer
    x = 74,646.98

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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.