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Finding the Fourth Proportional to 34,672.80, 52,009.20 and 18,926.40

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Solution

The fourth proportional to 34,672.80, 52,009.20 and 18,926.40 is: 28,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,672.80 : 52,009.20 = 18,926.40 : x
  2. Step 2: Convert to fraction form
    34,672.80/52,009.20 = 18,926.40/x
  3. Step 3: Cross multiply
    34,672.80x = 52,009.20 × 18,926.40
  4. Step 4: Simplify right side
    34,672.80x = 984,346,922.88
  5. Step 5: Solve for x
    x = 984,346,922.88/34,672.80
  6. Step 6: Final answer
    x = 28,389.60

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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.