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Finding the Fourth Proportional to 20,003.40, 29,961.90 and 16,547.40

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Solution

The fourth proportional to 20,003.40, 29,961.90 and 16,547.40 is: 24,785.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.40 : 29,961.90 = 16,547.40 : x
  2. Step 2: Convert to fraction form
    20,003.40/29,961.90 = 16,547.40/x
  3. Step 3: Cross multiply
    20,003.40x = 29,961.90 × 16,547.40
  4. Step 4: Simplify right side
    20,003.40x = 495,791,544.06
  5. Step 5: Solve for x
    x = 495,791,544.06/20,003.40
  6. Step 6: Final answer
    x = 24,785.36

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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.