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Finding the Fourth Proportional to 18,463.76, 27,689.46 and 5,980.46

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Solution

The fourth proportional to 18,463.76, 27,689.46 and 5,980.46 is: 8,968.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,463.76 : 27,689.46 = 5,980.46 : x
  2. Step 2: Convert to fraction form
    18,463.76/27,689.46 = 5,980.46/x
  3. Step 3: Cross multiply
    18,463.76x = 27,689.46 × 5,980.46
  4. Step 4: Simplify right side
    18,463.76x = 165,595,707.95
  5. Step 5: Solve for x
    x = 165,595,707.95/18,463.76
  6. Step 6: Final answer
    x = 8,968.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.