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Finding the Fourth Proportional to 526,789.97, 726,970.14 and 285,072.54

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Solution

The fourth proportional to 526,789.97, 726,970.14 and 285,072.54 is: 393,400.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,789.97 : 726,970.14 = 285,072.54 : x
  2. Step 2: Convert to fraction form
    526,789.97/726,970.14 = 285,072.54/x
  3. Step 3: Cross multiply
    526,789.97x = 726,970.14 × 285,072.54
  4. Step 4: Simplify right side
    526,789.97x = 207,239,225,382.98
  5. Step 5: Solve for x
    x = 207,239,225,382.98/526,789.97
  6. Step 6: Final answer
    x = 393,400.10

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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.