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Finding the Fourth Proportional to 28,552.69, 42,781.85 and 9,822.65

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Solution

The fourth proportional to 28,552.69, 42,781.85 and 9,822.65 is: 14,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,552.69 : 42,781.85 = 9,822.65 : x
  2. Step 2: Convert to fraction form
    28,552.69/42,781.85 = 9,822.65/x
  3. Step 3: Cross multiply
    28,552.69x = 42,781.85 × 9,822.65
  4. Step 4: Simplify right side
    28,552.69x = 420,231,089.79
  5. Step 5: Solve for x
    x = 420,231,089.79/28,552.69
  6. Step 6: Final answer
    x = 14,717.74

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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.