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Finding the Fourth Proportional to 18,411.76, 27,617.64 and 4,560.76

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Solution

The fourth proportional to 18,411.76, 27,617.64 and 4,560.76 is: 6,841.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.76 : 27,617.64 = 4,560.76 : x
  2. Step 2: Convert to fraction form
    18,411.76/27,617.64 = 4,560.76/x
  3. Step 3: Cross multiply
    18,411.76x = 27,617.64 × 4,560.76
  4. Step 4: Simplify right side
    18,411.76x = 125,957,427.81
  5. Step 5: Solve for x
    x = 125,957,427.81/18,411.76
  6. Step 6: Final answer
    x = 6,841.14

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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.