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Finding the Fourth Proportional to 60,438.60, 90,730.80 and 33,805.80

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Solution

The fourth proportional to 60,438.60, 90,730.80 and 33,805.80 is: 50,749.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,438.60 : 90,730.80 = 33,805.80 : x
  2. Step 2: Convert to fraction form
    60,438.60/90,730.80 = 33,805.80/x
  3. Step 3: Cross multiply
    60,438.60x = 90,730.80 × 33,805.80
  4. Step 4: Simplify right side
    60,438.60x = 3,067,227,278.64
  5. Step 5: Solve for x
    x = 3,067,227,278.64/60,438.60
  6. Step 6: Final answer
    x = 50,749.48

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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.