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Finding the Fourth Proportional to 422,645.04, 583,309.95 and 261,551.97

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Solution

The fourth proportional to 422,645.04, 583,309.95 and 261,551.97 is: 360,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,645.04 : 583,309.95 = 261,551.97 : x
  2. Step 2: Convert to fraction form
    422,645.04/583,309.95 = 261,551.97/x
  3. Step 3: Cross multiply
    422,645.04x = 583,309.95 × 261,551.97
  4. Step 4: Simplify right side
    422,645.04x = 152,565,866,543.10
  5. Step 5: Solve for x
    x = 152,565,866,543.10/422,645.04
  6. Step 6: Final answer
    x = 360,978.72

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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.