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Finding the Fourth Proportional to 124,504.32, 186,731.28 and 45,591.60

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Solution

The fourth proportional to 124,504.32, 186,731.28 and 45,591.60 is: 68,378.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,504.32 : 186,731.28 = 45,591.60 : x
  2. Step 2: Convert to fraction form
    124,504.32/186,731.28 = 45,591.60/x
  3. Step 3: Cross multiply
    124,504.32x = 186,731.28 × 45,591.60
  4. Step 4: Simplify right side
    124,504.32x = 8,513,377,825.25
  5. Step 5: Solve for x
    x = 8,513,377,825.25/124,504.32
  6. Step 6: Final answer
    x = 68,378.17

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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.