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Finding the Fourth Proportional to 125,858.80, 173,665.28 and 72,133.52

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Solution

The fourth proportional to 125,858.80, 173,665.28 and 72,133.52 is: 99,532.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,858.80 : 173,665.28 = 72,133.52 : x
  2. Step 2: Convert to fraction form
    125,858.80/173,665.28 = 72,133.52/x
  3. Step 3: Cross multiply
    125,858.80x = 173,665.28 × 72,133.52
  4. Step 4: Simplify right side
    125,858.80x = 12,527,087,948.19
  5. Step 5: Solve for x
    x = 12,527,087,948.19/125,858.80
  6. Step 6: Final answer
    x = 99,532.87

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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.