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Finding the Fourth Proportional to 418,863.75, 627,701.65 and 175,442.57

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Solution

The fourth proportional to 418,863.75, 627,701.65 and 175,442.57 is: 262,915.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,863.75 : 627,701.65 = 175,442.57 : x
  2. Step 2: Convert to fraction form
    418,863.75/627,701.65 = 175,442.57/x
  3. Step 3: Cross multiply
    418,863.75x = 627,701.65 × 175,442.57
  4. Step 4: Simplify right side
    418,863.75x = 110,125,589,446.01
  5. Step 5: Solve for x
    x = 110,125,589,446.01/418,863.75
  6. Step 6: Final answer
    x = 262,915.07

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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.