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Finding the Fourth Proportional to 132,045.80, 198,117.30 and 43,302.20

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Solution

The fourth proportional to 132,045.80, 198,117.30 and 43,302.20 is: 64,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,045.80 : 198,117.30 = 43,302.20 : x
  2. Step 2: Convert to fraction form
    132,045.80/198,117.30 = 43,302.20/x
  3. Step 3: Cross multiply
    132,045.80x = 198,117.30 × 43,302.20
  4. Step 4: Simplify right side
    132,045.80x = 8,578,914,948.06
  5. Step 5: Solve for x
    x = 8,578,914,948.06/132,045.80
  6. Step 6: Final answer
    x = 64,969.24

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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.