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Finding the Fourth Proportional to 576,262.20, 862,643.70 and 513,276.60

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Solution

The fourth proportional to 576,262.20, 862,643.70 and 513,276.60 is: 768,356.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,262.20 : 862,643.70 = 513,276.60 : x
  2. Step 2: Convert to fraction form
    576,262.20/862,643.70 = 513,276.60/x
  3. Step 3: Cross multiply
    576,262.20x = 862,643.70 × 513,276.60
  4. Step 4: Simplify right side
    576,262.20x = 442,774,825,347.42
  5. Step 5: Solve for x
    x = 442,774,825,347.42/576,262.20
  6. Step 6: Final answer
    x = 768,356.53

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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.