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Finding the Fourth Proportional to 18,663.84, 25,754.76 and 10,705.86

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Solution

The fourth proportional to 18,663.84, 25,754.76 and 10,705.86 is: 14,773.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.84 : 25,754.76 = 10,705.86 : x
  2. Step 2: Convert to fraction form
    18,663.84/25,754.76 = 10,705.86/x
  3. Step 3: Cross multiply
    18,663.84x = 25,754.76 × 10,705.86
  4. Step 4: Simplify right side
    18,663.84x = 275,726,854.89
  5. Step 5: Solve for x
    x = 275,726,854.89/18,663.84
  6. Step 6: Final answer
    x = 14,773.32

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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.