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Finding the Fourth Proportional to 526,956.57, 727,200.20 and 285,238.40

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Solution

The fourth proportional to 526,956.57, 727,200.20 and 285,238.40 is: 393,629.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,956.57 : 727,200.20 = 285,238.40 : x
  2. Step 2: Convert to fraction form
    526,956.57/727,200.20 = 285,238.40/x
  3. Step 3: Cross multiply
    526,956.57x = 727,200.20 × 285,238.40
  4. Step 4: Simplify right side
    526,956.57x = 207,425,418,604.78
  5. Step 5: Solve for x
    x = 207,425,418,604.78/526,956.57
  6. Step 6: Final answer
    x = 393,629.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.