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Finding the Fourth Proportional to 18,653.92, 25,742.32 and 10,587.65

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Solution

The fourth proportional to 18,653.92, 25,742.32 and 10,587.65 is: 14,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,653.92 : 25,742.32 = 10,587.65 : x
  2. Step 2: Convert to fraction form
    18,653.92/25,742.32 = 10,587.65/x
  3. Step 3: Cross multiply
    18,653.92x = 25,742.32 × 10,587.65
  4. Step 4: Simplify right side
    18,653.92x = 272,550,519.17
  5. Step 5: Solve for x
    x = 272,550,519.17/18,653.92
  6. Step 6: Final answer
    x = 14,610.90

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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.