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Finding the Fourth Proportional to 99,604.78, 137,451.10 and 54,281.84

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Solution

The fourth proportional to 99,604.78, 137,451.10 and 54,281.84 is: 74,907.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,604.78 : 137,451.10 = 54,281.84 : x
  2. Step 2: Convert to fraction form
    99,604.78/137,451.10 = 54,281.84/x
  3. Step 3: Cross multiply
    99,604.78x = 137,451.10 × 54,281.84
  4. Step 4: Simplify right side
    99,604.78x = 7,461,098,618.02
  5. Step 5: Solve for x
    x = 7,461,098,618.02/99,604.78
  6. Step 6: Final answer
    x = 74,907.03

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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.