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Finding the Fourth Proportional to 582,078.78, 873,118.40 and 261,856.61

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Solution

The fourth proportional to 582,078.78, 873,118.40 and 261,856.61 is: 392,785.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,078.78 : 873,118.40 = 261,856.61 : x
  2. Step 2: Convert to fraction form
    582,078.78/873,118.40 = 261,856.61/x
  3. Step 3: Cross multiply
    582,078.78x = 873,118.40 × 261,856.61
  4. Step 4: Simplify right side
    582,078.78x = 228,631,818,677.75
  5. Step 5: Solve for x
    x = 228,631,818,677.75/582,078.78
  6. Step 6: Final answer
    x = 392,785.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.