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Finding the Fourth Proportional to 125,039.98, 187,664.88 and 117,157.87

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Solution

The fourth proportional to 125,039.98, 187,664.88 and 117,157.87 is: 175,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,039.98 : 187,664.88 = 117,157.87 : x
  2. Step 2: Convert to fraction form
    125,039.98/187,664.88 = 117,157.87/x
  3. Step 3: Cross multiply
    125,039.98x = 187,664.88 × 117,157.87
  4. Step 4: Simplify right side
    125,039.98x = 21,986,417,614.61
  5. Step 5: Solve for x
    x = 21,986,417,614.61/125,039.98
  6. Step 6: Final answer
    x = 175,835.10

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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.