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Finding the Fourth Proportional to 60,670.80, 90,811.80 and 47,451.60

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Solution

The fourth proportional to 60,670.80, 90,811.80 and 47,451.60 is: 71,025.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,670.80 : 90,811.80 = 47,451.60 : x
  2. Step 2: Convert to fraction form
    60,670.80/90,811.80 = 47,451.60/x
  3. Step 3: Cross multiply
    60,670.80x = 90,811.80 × 47,451.60
  4. Step 4: Simplify right side
    60,670.80x = 4,309,165,208.88
  5. Step 5: Solve for x
    x = 4,309,165,208.88/60,670.80
  6. Step 6: Final answer
    x = 71,025.36

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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.