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Finding the Fourth Proportional to 576,015.40, 864,023.10 and 551,132.20

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Solution

The fourth proportional to 576,015.40, 864,023.10 and 551,132.20 is: 826,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,015.40 : 864,023.10 = 551,132.20 : x
  2. Step 2: Convert to fraction form
    576,015.40/864,023.10 = 551,132.20/x
  3. Step 3: Cross multiply
    576,015.40x = 864,023.10 × 551,132.20
  4. Step 4: Simplify right side
    576,015.40x = 476,190,951,953.82
  5. Step 5: Solve for x
    x = 476,190,951,953.82/576,015.40
  6. Step 6: Final answer
    x = 826,698.30

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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.