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Finding the Fourth Proportional to 574,142.40, 859,107.24 and 479,138.04

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Solution

The fourth proportional to 574,142.40, 859,107.24 and 479,138.04 is: 716,949.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,142.40 : 859,107.24 = 479,138.04 : x
  2. Step 2: Convert to fraction form
    574,142.40/859,107.24 = 479,138.04/x
  3. Step 3: Cross multiply
    574,142.40x = 859,107.24 × 479,138.04
  4. Step 4: Simplify right side
    574,142.40x = 411,630,959,123.41
  5. Step 5: Solve for x
    x = 411,630,959,123.41/574,142.40
  6. Step 6: Final answer
    x = 716,949.24

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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.