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Finding the Fourth Proportional to 125,363.98, 187,869.15 and 69,229.36

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Solution

The fourth proportional to 125,363.98, 187,869.15 and 69,229.36 is: 103,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,363.98 : 187,869.15 = 69,229.36 : x
  2. Step 2: Convert to fraction form
    125,363.98/187,869.15 = 69,229.36/x
  3. Step 3: Cross multiply
    125,363.98x = 187,869.15 × 69,229.36
  4. Step 4: Simplify right side
    125,363.98x = 13,006,061,018.24
  5. Step 5: Solve for x
    x = 13,006,061,018.24/125,363.98
  6. Step 6: Final answer
    x = 103,746.40

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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.