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Finding the Fourth Proportional to 15,999.67, 22,079.55 and 8,925.94

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Solution

The fourth proportional to 15,999.67, 22,079.55 and 8,925.94 is: 12,317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.67 : 22,079.55 = 8,925.94 : x
  2. Step 2: Convert to fraction form
    15,999.67/22,079.55 = 8,925.94/x
  3. Step 3: Cross multiply
    15,999.67x = 22,079.55 × 8,925.94
  4. Step 4: Simplify right side
    15,999.67x = 197,080,738.53
  5. Step 5: Solve for x
    x = 197,080,738.53/15,999.67
  6. Step 6: Final answer
    x = 12,317.80

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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.