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Finding the Fourth Proportional to 15,543.68, 21,448.68 and 9,254.84

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Solution

The fourth proportional to 15,543.68, 21,448.68 and 9,254.84 is: 12,770.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.68 : 21,448.68 = 9,254.84 : x
  2. Step 2: Convert to fraction form
    15,543.68/21,448.68 = 9,254.84/x
  3. Step 3: Cross multiply
    15,543.68x = 21,448.68 × 9,254.84
  4. Step 4: Simplify right side
    15,543.68x = 198,504,101.61
  5. Step 5: Solve for x
    x = 198,504,101.61/15,543.68
  6. Step 6: Final answer
    x = 12,770.73

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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.