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Finding the Fourth Proportional to 18,053.30, 24,912.52 and 9,986.47

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Solution

The fourth proportional to 18,053.30, 24,912.52 and 9,986.47 is: 13,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,053.30 : 24,912.52 = 9,986.47 : x
  2. Step 2: Convert to fraction form
    18,053.30/24,912.52 = 9,986.47/x
  3. Step 3: Cross multiply
    18,053.30x = 24,912.52 × 9,986.47
  4. Step 4: Simplify right side
    18,053.30x = 248,788,133.60
  5. Step 5: Solve for x
    x = 248,788,133.60/18,053.30
  6. Step 6: Final answer
    x = 13,780.76

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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.