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Finding the Fourth Proportional to 577,612.30, 866,418.45 and 437,644.30

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Solution

The fourth proportional to 577,612.30, 866,418.45 and 437,644.30 is: 656,466.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,612.30 : 866,418.45 = 437,644.30 : x
  2. Step 2: Convert to fraction form
    577,612.30/866,418.45 = 437,644.30/x
  3. Step 3: Cross multiply
    577,612.30x = 866,418.45 × 437,644.30
  4. Step 4: Simplify right side
    577,612.30x = 379,183,096,057.34
  5. Step 5: Solve for x
    x = 379,183,096,057.34/577,612.30
  6. Step 6: Final answer
    x = 656,466.45

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Half scale
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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.