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Finding the Fourth Proportional to 20,641.72, 30,962.59 and 5,850.77

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Solution

The fourth proportional to 20,641.72, 30,962.59 and 5,850.77 is: 8,776.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.72 : 30,962.59 = 5,850.77 : x
  2. Step 2: Convert to fraction form
    20,641.72/30,962.59 = 5,850.77/x
  3. Step 3: Cross multiply
    20,641.72x = 30,962.59 × 5,850.77
  4. Step 4: Simplify right side
    20,641.72x = 181,154,992.69
  5. Step 5: Solve for x
    x = 181,154,992.69/20,641.72
  6. Step 6: Final answer
    x = 8,776.16

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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.