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Finding the Fourth Proportional to 422,650.68, 583,317.68 and 261,557.61

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Solution

The fourth proportional to 422,650.68, 583,317.68 and 261,557.61 is: 360,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,650.68 : 583,317.68 = 261,557.61 : x
  2. Step 2: Convert to fraction form
    422,650.68/583,317.68 = 261,557.61/x
  3. Step 3: Cross multiply
    422,650.68x = 583,317.68 × 261,557.61
  4. Step 4: Simplify right side
    422,650.68x = 152,571,176,943.76
  5. Step 5: Solve for x
    x = 152,571,176,943.76/422,650.68
  6. Step 6: Final answer
    x = 360,986.47

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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.