Home / 66,005.10-99,007.65-19,251.90

Finding the Fourth Proportional to 66,005.10, 99,007.65 and 19,251.90

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Solution

The fourth proportional to 66,005.10, 99,007.65 and 19,251.90 is: 28,877.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,005.10 : 99,007.65 = 19,251.90 : x
  2. Step 2: Convert to fraction form
    66,005.10/99,007.65 = 19,251.90/x
  3. Step 3: Cross multiply
    66,005.10x = 99,007.65 × 19,251.90
  4. Step 4: Simplify right side
    66,005.10x = 1,906,085,377.04
  5. Step 5: Solve for x
    x = 1,906,085,377.04/66,005.10
  6. Step 6: Final answer
    x = 28,877.85

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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.