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Finding the Fourth Proportional to 18,803.67, 25,948.65 and 10,305.58

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Solution

The fourth proportional to 18,803.67, 25,948.65 and 10,305.58 is: 14,221.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.67 : 25,948.65 = 10,305.58 : x
  2. Step 2: Convert to fraction form
    18,803.67/25,948.65 = 10,305.58/x
  3. Step 3: Cross multiply
    18,803.67x = 25,948.65 × 10,305.58
  4. Step 4: Simplify right side
    18,803.67x = 267,415,888.47
  5. Step 5: Solve for x
    x = 267,415,888.47/18,803.67
  6. Step 6: Final answer
    x = 14,221.47

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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.