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Finding the Fourth Proportional to 125,715.11, 173,476.62 and 74,024.01

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Solution

The fourth proportional to 125,715.11, 173,476.62 and 74,024.01 is: 102,147.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,715.11 : 173,476.62 = 74,024.01 : x
  2. Step 2: Convert to fraction form
    125,715.11/173,476.62 = 74,024.01/x
  3. Step 3: Cross multiply
    125,715.11x = 173,476.62 × 74,024.01
  4. Step 4: Simplify right side
    125,715.11x = 12,841,435,053.65
  5. Step 5: Solve for x
    x = 12,841,435,053.65/125,715.11
  6. Step 6: Final answer
    x = 102,147.11

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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.