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Finding the Fourth Proportional to 418,498.80, 627,828.99 and 178,609.20

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Solution

The fourth proportional to 418,498.80, 627,828.99 and 178,609.20 is: 267,948.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,498.80 : 627,828.99 = 178,609.20 : x
  2. Step 2: Convert to fraction form
    418,498.80/627,828.99 = 178,609.20/x
  3. Step 3: Cross multiply
    418,498.80x = 627,828.99 × 178,609.20
  4. Step 4: Simplify right side
    418,498.80x = 112,136,033,640.71
  5. Step 5: Solve for x
    x = 112,136,033,640.71/418,498.80
  6. Step 6: Final answer
    x = 267,948.28

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1.5x scale

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.