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Finding the Fourth Proportional to 498,440.80, 747,661.20 and 232,720.30

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Solution

The fourth proportional to 498,440.80, 747,661.20 and 232,720.30 is: 349,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,440.80 : 747,661.20 = 232,720.30 : x
  2. Step 2: Convert to fraction form
    498,440.80/747,661.20 = 232,720.30/x
  3. Step 3: Cross multiply
    498,440.80x = 747,661.20 × 232,720.30
  4. Step 4: Simplify right side
    498,440.80x = 173,995,938,762.36
  5. Step 5: Solve for x
    x = 173,995,938,762.36/498,440.80
  6. Step 6: Final answer
    x = 349,080.45

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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.