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Finding the Fourth Proportional to 18,641.12, 25,735.20 and 14,326.16

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Solution

The fourth proportional to 18,641.12, 25,735.20 and 14,326.16 is: 19,778.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.12 : 25,735.20 = 14,326.16 : x
  2. Step 2: Convert to fraction form
    18,641.12/25,735.20 = 14,326.16/x
  3. Step 3: Cross multiply
    18,641.12x = 25,735.20 × 14,326.16
  4. Step 4: Simplify right side
    18,641.12x = 368,686,592.83
  5. Step 5: Solve for x
    x = 368,686,592.83/18,641.12
  6. Step 6: Final answer
    x = 19,778.14

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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.