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Finding the Fourth Proportional to 18,730.80, 25,848.08 and 10,233.20

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Solution

The fourth proportional to 18,730.80, 25,848.08 and 10,233.20 is: 14,121.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.80 : 25,848.08 = 10,233.20 : x
  2. Step 2: Convert to fraction form
    18,730.80/25,848.08 = 10,233.20/x
  3. Step 3: Cross multiply
    18,730.80x = 25,848.08 × 10,233.20
  4. Step 4: Simplify right side
    18,730.80x = 264,508,572.26
  5. Step 5: Solve for x
    x = 264,508,572.26/18,730.80
  6. Step 6: Final answer
    x = 14,121.58

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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.