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Finding the Fourth Proportional to 121,874.60, 182,811.90 and 59,666.60

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Solution

The fourth proportional to 121,874.60, 182,811.90 and 59,666.60 is: 89,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,874.60 : 182,811.90 = 59,666.60 : x
  2. Step 2: Convert to fraction form
    121,874.60/182,811.90 = 59,666.60/x
  3. Step 3: Cross multiply
    121,874.60x = 182,811.90 × 59,666.60
  4. Step 4: Simplify right side
    121,874.60x = 10,907,764,512.54
  5. Step 5: Solve for x
    x = 10,907,764,512.54/121,874.60
  6. Step 6: Final answer
    x = 89,499.90

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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.