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Finding the Fourth Proportional to 83,266.90, 124,900.35 and 74,518.90

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Solution

The fourth proportional to 83,266.90, 124,900.35 and 74,518.90 is: 111,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,266.90 : 124,900.35 = 74,518.90 : x
  2. Step 2: Convert to fraction form
    83,266.90/124,900.35 = 74,518.90/x
  3. Step 3: Cross multiply
    83,266.90x = 124,900.35 × 74,518.90
  4. Step 4: Simplify right side
    83,266.90x = 9,307,436,691.62
  5. Step 5: Solve for x
    x = 9,307,436,691.62/83,266.90
  6. Step 6: Final answer
    x = 111,778.35

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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.