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Finding the Fourth Proportional to 132,547.20, 198,529.20 and 115,051.20

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Solution

The fourth proportional to 132,547.20, 198,529.20 and 115,051.20 is: 172,323.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,547.20 : 198,529.20 = 115,051.20 : x
  2. Step 2: Convert to fraction form
    132,547.20/198,529.20 = 115,051.20/x
  3. Step 3: Cross multiply
    132,547.20x = 198,529.20 × 115,051.20
  4. Step 4: Simplify right side
    132,547.20x = 22,841,022,695.04
  5. Step 5: Solve for x
    x = 22,841,022,695.04/132,547.20
  6. Step 6: Final answer
    x = 172,323.69

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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.