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Finding the Fourth Proportional to 526,761.78, 726,925.95 and 285,039.06

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Solution

The fourth proportional to 526,761.78, 726,925.95 and 285,039.06 is: 393,351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,761.78 : 726,925.95 = 285,039.06 : x
  2. Step 2: Convert to fraction form
    526,761.78/726,925.95 = 285,039.06/x
  3. Step 3: Cross multiply
    526,761.78x = 726,925.95 × 285,039.06
  4. Step 4: Simplify right side
    526,761.78x = 207,202,289,477.61
  5. Step 5: Solve for x
    x = 207,202,289,477.61/526,761.78
  6. Step 6: Final answer
    x = 393,351.03

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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.