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Finding the Fourth Proportional to 18,641.62, 25,726.50 and 10,685.17

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Solution

The fourth proportional to 18,641.62, 25,726.50 and 10,685.17 is: 14,746.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.62 : 25,726.50 = 10,685.17 : x
  2. Step 2: Convert to fraction form
    18,641.62/25,726.50 = 10,685.17/x
  3. Step 3: Cross multiply
    18,641.62x = 25,726.50 × 10,685.17
  4. Step 4: Simplify right side
    18,641.62x = 274,892,026.01
  5. Step 5: Solve for x
    x = 274,892,026.01/18,641.62
  6. Step 6: Final answer
    x = 14,746.14

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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.