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Finding the Fourth Proportional to 132,305.69, 198,461.18 and 42,365.56

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Solution

The fourth proportional to 132,305.69, 198,461.18 and 42,365.56 is: 63,549.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,305.69 : 198,461.18 = 42,365.56 : x
  2. Step 2: Convert to fraction form
    132,305.69/198,461.18 = 42,365.56/x
  3. Step 3: Cross multiply
    132,305.69x = 198,461.18 × 42,365.56
  4. Step 4: Simplify right side
    132,305.69x = 8,407,918,817.13
  5. Step 5: Solve for x
    x = 8,407,918,817.13/132,305.69
  6. Step 6: Final answer
    x = 63,549.19

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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.