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Finding the Fourth Proportional to 99,473.32, 149,209.98 and 93,390.76

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Solution

The fourth proportional to 99,473.32, 149,209.98 and 93,390.76 is: 140,086.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,473.32 : 149,209.98 = 93,390.76 : x
  2. Step 2: Convert to fraction form
    99,473.32/149,209.98 = 93,390.76/x
  3. Step 3: Cross multiply
    99,473.32x = 149,209.98 × 93,390.76
  4. Step 4: Simplify right side
    99,473.32x = 13,934,833,431.78
  5. Step 5: Solve for x
    x = 13,934,833,431.78/99,473.32
  6. Step 6: Final answer
    x = 140,086.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.