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Finding the Fourth Proportional to 574,429.70, 861,644.55 and 147,964.70

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Solution

The fourth proportional to 574,429.70, 861,644.55 and 147,964.70 is: 221,947.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,429.70 : 861,644.55 = 147,964.70 : x
  2. Step 2: Convert to fraction form
    574,429.70/861,644.55 = 147,964.70/x
  3. Step 3: Cross multiply
    574,429.70x = 861,644.55 × 147,964.70
  4. Step 4: Simplify right side
    574,429.70x = 127,492,977,347.39
  5. Step 5: Solve for x
    x = 127,492,977,347.39/574,429.70
  6. Step 6: Final answer
    x = 221,947.05

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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.