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Finding the Fourth Proportional to 526,818.78, 727,011.21 and 285,103.12

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Solution

The fourth proportional to 526,818.78, 727,011.21 and 285,103.12 is: 393,443.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,818.78 : 727,011.21 = 285,103.12 : x
  2. Step 2: Convert to fraction form
    526,818.78/727,011.21 = 285,103.12/x
  3. Step 3: Cross multiply
    526,818.78x = 727,011.21 × 285,103.12
  4. Step 4: Simplify right side
    526,818.78x = 207,273,164,245.98
  5. Step 5: Solve for x
    x = 207,273,164,245.98/526,818.78
  6. Step 6: Final answer
    x = 393,443.01

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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.