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Finding the Fourth Proportional to 667,100.24, 920,581.26 and 372,752.31

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Solution

The fourth proportional to 667,100.24, 920,581.26 and 372,752.31 is: 514,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,100.24 : 920,581.26 = 372,752.31 : x
  2. Step 2: Convert to fraction form
    667,100.24/920,581.26 = 372,752.31/x
  3. Step 3: Cross multiply
    667,100.24x = 920,581.26 × 372,752.31
  4. Step 4: Simplify right side
    667,100.24x = 343,148,791,207.71
  5. Step 5: Solve for x
    x = 343,148,791,207.71/667,100.24
  6. Step 6: Final answer
    x = 514,388.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.