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Finding the Fourth Proportional to 99,959.58, 149,864.49 and 60,507.18

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Solution

The fourth proportional to 99,959.58, 149,864.49 and 60,507.18 is: 90,715.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,959.58 : 149,864.49 = 60,507.18 : x
  2. Step 2: Convert to fraction form
    99,959.58/149,864.49 = 60,507.18/x
  3. Step 3: Cross multiply
    99,959.58x = 149,864.49 × 60,507.18
  4. Step 4: Simplify right side
    99,959.58x = 9,067,877,672.04
  5. Step 5: Solve for x
    x = 9,067,877,672.04/99,959.58
  6. Step 6: Final answer
    x = 90,715.44

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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.