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Finding the Fourth Proportional to 28,766.77, 39,698.03 and 16,020.11

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Solution

The fourth proportional to 28,766.77, 39,698.03 and 16,020.11 is: 22,107.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,766.77 : 39,698.03 = 16,020.11 : x
  2. Step 2: Convert to fraction form
    28,766.77/39,698.03 = 16,020.11/x
  3. Step 3: Cross multiply
    28,766.77x = 39,698.03 × 16,020.11
  4. Step 4: Simplify right side
    28,766.77x = 635,966,807.38
  5. Step 5: Solve for x
    x = 635,966,807.38/28,766.77
  6. Step 6: Final answer
    x = 22,107.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.