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Finding the Fourth Proportional to 577,372.20, 866,058.30 and 518,323.20

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Solution

The fourth proportional to 577,372.20, 866,058.30 and 518,323.20 is: 777,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,372.20 : 866,058.30 = 518,323.20 : x
  2. Step 2: Convert to fraction form
    577,372.20/866,058.30 = 518,323.20/x
  3. Step 3: Cross multiply
    577,372.20x = 866,058.30 × 518,323.20
  4. Step 4: Simplify right side
    577,372.20x = 448,898,109,442.56
  5. Step 5: Solve for x
    x = 448,898,109,442.56/577,372.20
  6. Step 6: Final answer
    x = 777,484.80

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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.