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Finding the Fourth Proportional to 83,336.80, 124,859.58 and 69,386.44

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Solution

The fourth proportional to 83,336.80, 124,859.58 and 69,386.44 is: 103,958.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,336.80 : 124,859.58 = 69,386.44 : x
  2. Step 2: Convert to fraction form
    83,336.80/124,859.58 = 69,386.44/x
  3. Step 3: Cross multiply
    83,336.80x = 124,859.58 × 69,386.44
  4. Step 4: Simplify right side
    83,336.80x = 8,663,561,756.10
  5. Step 5: Solve for x
    x = 8,663,561,756.10/83,336.80
  6. Step 6: Final answer
    x = 103,958.42

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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.