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Finding the Fourth Proportional to 99,053.30, 136,693.10 and 53,731.30

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Solution

The fourth proportional to 99,053.30, 136,693.10 and 53,731.30 is: 74,148.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,053.30 : 136,693.10 = 53,731.30 : x
  2. Step 2: Convert to fraction form
    99,053.30/136,693.10 = 53,731.30/x
  3. Step 3: Cross multiply
    99,053.30x = 136,693.10 × 53,731.30
  4. Step 4: Simplify right side
    99,053.30x = 7,344,698,012.93
  5. Step 5: Solve for x
    x = 7,344,698,012.93/99,053.30
  6. Step 6: Final answer
    x = 74,148.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.