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Finding the Fourth Proportional to 125,207.20, 187,465.20 and 97,559.20

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Solution

The fourth proportional to 125,207.20, 187,465.20 and 97,559.20 is: 146,069.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,207.20 : 187,465.20 = 97,559.20 : x
  2. Step 2: Convert to fraction form
    125,207.20/187,465.20 = 97,559.20/x
  3. Step 3: Cross multiply
    125,207.20x = 187,465.20 × 97,559.20
  4. Step 4: Simplify right side
    125,207.20x = 18,288,954,939.84
  5. Step 5: Solve for x
    x = 18,288,954,939.84/125,207.20
  6. Step 6: Final answer
    x = 146,069.51

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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.