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Finding the Fourth Proportional to 819,697.88, 1,131,180.88 and 457,122.16

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Solution

The fourth proportional to 819,697.88, 1,131,180.88 and 457,122.16 is: 630,827.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,697.88 : 1,131,180.88 = 457,122.16 : x
  2. Step 2: Convert to fraction form
    819,697.88/1,131,180.88 = 457,122.16/x
  3. Step 3: Cross multiply
    819,697.88x = 1,131,180.88 × 457,122.16
  4. Step 4: Simplify right side
    819,697.88x = 517,087,847,216.30
  5. Step 5: Solve for x
    x = 517,087,847,216.30/819,697.88
  6. Step 6: Final answer
    x = 630,827.36

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Double scale
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1.5x scale

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.