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Finding the Fourth Proportional to 572,227.90, 858,341.85 and 172,930.30

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Solution

The fourth proportional to 572,227.90, 858,341.85 and 172,930.30 is: 259,395.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,227.90 : 858,341.85 = 172,930.30 : x
  2. Step 2: Convert to fraction form
    572,227.90/858,341.85 = 172,930.30/x
  3. Step 3: Cross multiply
    572,227.90x = 858,341.85 × 172,930.30
  4. Step 4: Simplify right side
    572,227.90x = 148,433,313,623.06
  5. Step 5: Solve for x
    x = 148,433,313,623.06/572,227.90
  6. Step 6: Final answer
    x = 259,395.45

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Double scale
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Similar ratio
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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.