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Finding the Fourth Proportional to 83,218.59, 124,826.86 and 79,184.26

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Solution

The fourth proportional to 83,218.59, 124,826.86 and 79,184.26 is: 118,775.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,218.59 : 124,826.86 = 79,184.26 : x
  2. Step 2: Convert to fraction form
    83,218.59/124,826.86 = 79,184.26/x
  3. Step 3: Cross multiply
    83,218.59x = 124,826.86 × 79,184.26
  4. Step 4: Simplify right side
    83,218.59x = 9,884,323,014.94
  5. Step 5: Solve for x
    x = 9,884,323,014.94/83,218.59
  6. Step 6: Final answer
    x = 118,775.42

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1.5x scale

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.