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Finding the Fourth Proportional to 461,291.80, 691,937.70 and 283,221.40

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Solution

The fourth proportional to 461,291.80, 691,937.70 and 283,221.40 is: 424,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,291.80 : 691,937.70 = 283,221.40 : x
  2. Step 2: Convert to fraction form
    461,291.80/691,937.70 = 283,221.40/x
  3. Step 3: Cross multiply
    461,291.80x = 691,937.70 × 283,221.40
  4. Step 4: Simplify right side
    461,291.80x = 195,971,564,106.78
  5. Step 5: Solve for x
    x = 195,971,564,106.78/461,291.80
  6. Step 6: Final answer
    x = 424,832.10

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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.