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Finding the Fourth Proportional to 581,646.40, 872,469.60 and 576,116.80

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Solution

The fourth proportional to 581,646.40, 872,469.60 and 576,116.80 is: 864,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,646.40 : 872,469.60 = 576,116.80 : x
  2. Step 2: Convert to fraction form
    581,646.40/872,469.60 = 576,116.80/x
  3. Step 3: Cross multiply
    581,646.40x = 872,469.60 × 576,116.80
  4. Step 4: Simplify right side
    581,646.40x = 502,644,394,049.28
  5. Step 5: Solve for x
    x = 502,644,394,049.28/581,646.40
  6. Step 6: Final answer
    x = 864,175.20

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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.