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Finding the Fourth Proportional to 457,920.60, 686,870.10 and 125,496.60

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Solution

The fourth proportional to 457,920.60, 686,870.10 and 125,496.60 is: 188,241.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,920.60 : 686,870.10 = 125,496.60 : x
  2. Step 2: Convert to fraction form
    457,920.60/686,870.10 = 125,496.60/x
  3. Step 3: Cross multiply
    457,920.60x = 686,870.10 × 125,496.60
  4. Step 4: Simplify right side
    457,920.60x = 86,199,862,191.66
  5. Step 5: Solve for x
    x = 86,199,862,191.66/457,920.60
  6. Step 6: Final answer
    x = 188,241.94

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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.