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Finding the Fourth Proportional to 18,154.98, 25,063.97 and 13,897.89

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Solution

The fourth proportional to 18,154.98, 25,063.97 and 13,897.89 is: 19,186.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,154.98 : 25,063.97 = 13,897.89 : x
  2. Step 2: Convert to fraction form
    18,154.98/25,063.97 = 13,897.89/x
  3. Step 3: Cross multiply
    18,154.98x = 25,063.97 × 13,897.89
  4. Step 4: Simplify right side
    18,154.98x = 348,336,228.53
  5. Step 5: Solve for x
    x = 348,336,228.53/18,154.98
  6. Step 6: Final answer
    x = 19,186.81

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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.