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Finding the Fourth Proportional to 28,593.66, 42,879.96 and 9,868.92

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Solution

The fourth proportional to 28,593.66, 42,879.96 and 9,868.92 is: 14,799.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593.66 : 42,879.96 = 9,868.92 : x
  2. Step 2: Convert to fraction form
    28,593.66/42,879.96 = 9,868.92/x
  3. Step 3: Cross multiply
    28,593.66x = 42,879.96 × 9,868.92
  4. Step 4: Simplify right side
    28,593.66x = 423,178,894.84
  5. Step 5: Solve for x
    x = 423,178,894.84/28,593.66
  6. Step 6: Final answer
    x = 14,799.75

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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.