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Finding the Fourth Proportional to 125,621.64, 188,385.48 and 55,462.68

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Solution

The fourth proportional to 125,621.64, 188,385.48 and 55,462.68 is: 83,173.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,621.64 : 188,385.48 = 55,462.68 : x
  2. Step 2: Convert to fraction form
    125,621.64/188,385.48 = 55,462.68/x
  3. Step 3: Cross multiply
    125,621.64x = 188,385.48 × 55,462.68
  4. Step 4: Simplify right side
    125,621.64x = 10,448,363,593.89
  5. Step 5: Solve for x
    x = 10,448,363,593.89/125,621.64
  6. Step 6: Final answer
    x = 83,173.28

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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.