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Finding the Fourth Proportional to 576,023.80, 864,035.70 and 513,038.20

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Solution

The fourth proportional to 576,023.80, 864,035.70 and 513,038.20 is: 769,557.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,023.80 : 864,035.70 = 513,038.20 : x
  2. Step 2: Convert to fraction form
    576,023.80/864,035.70 = 513,038.20/x
  3. Step 3: Cross multiply
    576,023.80x = 864,035.70 × 513,038.20
  4. Step 4: Simplify right side
    576,023.80x = 443,283,320,263.74
  5. Step 5: Solve for x
    x = 443,283,320,263.74/576,023.80
  6. Step 6: Final answer
    x = 769,557.30

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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.