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Finding the Fourth Proportional to 544,215.90, 815,643.45 and 278,082.30

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Solution

The fourth proportional to 544,215.90, 815,643.45 and 278,082.30 is: 416,775.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,215.90 : 815,643.45 = 278,082.30 : x
  2. Step 2: Convert to fraction form
    544,215.90/815,643.45 = 278,082.30/x
  3. Step 3: Cross multiply
    544,215.90x = 815,643.45 × 278,082.30
  4. Step 4: Simplify right side
    544,215.90x = 226,816,006,555.94
  5. Step 5: Solve for x
    x = 226,816,006,555.94/544,215.90
  6. Step 6: Final answer
    x = 416,775.78

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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.