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Finding the Fourth Proportional to 18,607.72, 25,659.30 and 14,359.48

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Solution

The fourth proportional to 18,607.72, 25,659.30 and 14,359.48 is: 19,801.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.72 : 25,659.30 = 14,359.48 : x
  2. Step 2: Convert to fraction form
    18,607.72/25,659.30 = 14,359.48/x
  3. Step 3: Cross multiply
    18,607.72x = 25,659.30 × 14,359.48
  4. Step 4: Simplify right side
    18,607.72x = 368,454,205.16
  5. Step 5: Solve for x
    x = 368,454,205.16/18,607.72
  6. Step 6: Final answer
    x = 19,801.15

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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.