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Finding the Fourth Proportional to 125,298.72, 187,944.48 and 46,411.20

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Solution

The fourth proportional to 125,298.72, 187,944.48 and 46,411.20 is: 69,615.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,298.72 : 187,944.48 = 46,411.20 : x
  2. Step 2: Convert to fraction form
    125,298.72/187,944.48 = 46,411.20/x
  3. Step 3: Cross multiply
    125,298.72x = 187,944.48 × 46,411.20
  4. Step 4: Simplify right side
    125,298.72x = 8,722,728,850.18
  5. Step 5: Solve for x
    x = 8,722,728,850.18/125,298.72
  6. Step 6: Final answer
    x = 69,615.47

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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.