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Finding the Fourth Proportional to 92,711.80, 139,067.70 and 50,575.60

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Solution

The fourth proportional to 92,711.80, 139,067.70 and 50,575.60 is: 75,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,711.80 : 139,067.70 = 50,575.60 : x
  2. Step 2: Convert to fraction form
    92,711.80/139,067.70 = 50,575.60/x
  3. Step 3: Cross multiply
    92,711.80x = 139,067.70 × 50,575.60
  4. Step 4: Simplify right side
    92,711.80x = 7,033,432,368.12
  5. Step 5: Solve for x
    x = 7,033,432,368.12/92,711.80
  6. Step 6: Final answer
    x = 75,863.40

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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.