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Finding the Fourth Proportional to 73,225.68, 109,713.15 and 39,969.09

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Solution

The fourth proportional to 73,225.68, 109,713.15 and 39,969.09 is: 59,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,225.68 : 109,713.15 = 39,969.09 : x
  2. Step 2: Convert to fraction form
    73,225.68/109,713.15 = 39,969.09/x
  3. Step 3: Cross multiply
    73,225.68x = 109,713.15 × 39,969.09
  4. Step 4: Simplify right side
    73,225.68x = 4,385,134,766.53
  5. Step 5: Solve for x
    x = 4,385,134,766.53/73,225.68
  6. Step 6: Final answer
    x = 59,885.20

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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.