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Finding the Fourth Proportional to 19,343.70, 29,015.55 and 16,281.90

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Solution

The fourth proportional to 19,343.70, 29,015.55 and 16,281.90 is: 24,422.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,343.70 : 29,015.55 = 16,281.90 : x
  2. Step 2: Convert to fraction form
    19,343.70/29,015.55 = 16,281.90/x
  3. Step 3: Cross multiply
    19,343.70x = 29,015.55 × 16,281.90
  4. Step 4: Simplify right side
    19,343.70x = 472,428,283.55
  5. Step 5: Solve for x
    x = 472,428,283.55/19,343.70
  6. Step 6: Final answer
    x = 24,422.85

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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.