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Finding the Fourth Proportional to 576,165.20, 862,174.20 and 389,541.20

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Solution

The fourth proportional to 576,165.20, 862,174.20 and 389,541.20 is: 582,909.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,165.20 : 862,174.20 = 389,541.20 : x
  2. Step 2: Convert to fraction form
    576,165.20/862,174.20 = 389,541.20/x
  3. Step 3: Cross multiply
    576,165.20x = 862,174.20 × 389,541.20
  4. Step 4: Simplify right side
    576,165.20x = 335,852,372,477.04
  5. Step 5: Solve for x
    x = 335,852,372,477.04/576,165.20
  6. Step 6: Final answer
    x = 582,909.85

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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.