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Finding the Fourth Proportional to 526,780.56, 726,959.08 and 285,063.10

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Solution

The fourth proportional to 526,780.56, 726,959.08 and 285,063.10 is: 393,388.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,780.56 : 726,959.08 = 285,063.10 : x
  2. Step 2: Convert to fraction form
    526,780.56/726,959.08 = 285,063.10/x
  3. Step 3: Cross multiply
    526,780.56x = 726,959.08 × 285,063.10
  4. Step 4: Simplify right side
    526,780.56x = 207,229,208,917.95
  5. Step 5: Solve for x
    x = 207,229,208,917.95/526,780.56
  6. Step 6: Final answer
    x = 393,388.11

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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.