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Finding the Fourth Proportional to 18,367.84, 25,347.54 and 9,984.52

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Solution

The fourth proportional to 18,367.84, 25,347.54 and 9,984.52 is: 13,778.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,367.84 : 25,347.54 = 9,984.52 : x
  2. Step 2: Convert to fraction form
    18,367.84/25,347.54 = 9,984.52/x
  3. Step 3: Cross multiply
    18,367.84x = 25,347.54 × 9,984.52
  4. Step 4: Simplify right side
    18,367.84x = 253,083,020.08
  5. Step 5: Solve for x
    x = 253,083,020.08/18,367.84
  6. Step 6: Final answer
    x = 13,778.59

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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.