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Finding the Fourth Proportional to 99,548.60, 137,367.10 and 61,302.02

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Solution

The fourth proportional to 99,548.60, 137,367.10 and 61,302.02 is: 84,590.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,548.60 : 137,367.10 = 61,302.02 : x
  2. Step 2: Convert to fraction form
    99,548.60/137,367.10 = 61,302.02/x
  3. Step 3: Cross multiply
    99,548.60x = 137,367.10 × 61,302.02
  4. Step 4: Simplify right side
    99,548.60x = 8,420,880,711.54
  5. Step 5: Solve for x
    x = 8,420,880,711.54/99,548.60
  6. Step 6: Final answer
    x = 84,590.65

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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.