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Finding the Fourth Proportional to 18,199.42, 25,101.16 and 15,957.54

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Solution

The fourth proportional to 18,199.42, 25,101.16 and 15,957.54 is: 22,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,199.42 : 25,101.16 = 15,957.54 : x
  2. Step 2: Convert to fraction form
    18,199.42/25,101.16 = 15,957.54/x
  3. Step 3: Cross multiply
    18,199.42x = 25,101.16 × 15,957.54
  4. Step 4: Simplify right side
    18,199.42x = 400,552,724.85
  5. Step 5: Solve for x
    x = 400,552,724.85/18,199.42
  6. Step 6: Final answer
    x = 22,009.10

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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.