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Finding the Fourth Proportional to 60,980.96, 91,471.45 and 40,199.60

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Solution

The fourth proportional to 60,980.96, 91,471.45 and 40,199.60 is: 60,299.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,980.96 : 91,471.45 = 40,199.60 : x
  2. Step 2: Convert to fraction form
    60,980.96/91,471.45 = 40,199.60/x
  3. Step 3: Cross multiply
    60,980.96x = 91,471.45 × 40,199.60
  4. Step 4: Simplify right side
    60,980.96x = 3,677,115,701.42
  5. Step 5: Solve for x
    x = 3,677,115,701.42/60,980.96
  6. Step 6: Final answer
    x = 60,299.41

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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.