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Finding the Fourth Proportional to 125,048.68, 172,589.00 and 74,090.10

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Solution

The fourth proportional to 125,048.68, 172,589.00 and 74,090.10 is: 102,257.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,048.68 : 172,589.00 = 74,090.10 : x
  2. Step 2: Convert to fraction form
    125,048.68/172,589.00 = 74,090.10/x
  3. Step 3: Cross multiply
    125,048.68x = 172,589.00 × 74,090.10
  4. Step 4: Simplify right side
    125,048.68x = 12,787,136,545.66
  5. Step 5: Solve for x
    x = 12,787,136,545.66/125,048.68
  6. Step 6: Final answer
    x = 102,257.27

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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.