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Finding the Fourth Proportional to 18,110.70, 27,178.20 and 10,707.30

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Solution

The fourth proportional to 18,110.70, 27,178.20 and 10,707.30 is: 16,068.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,110.70 : 27,178.20 = 10,707.30 : x
  2. Step 2: Convert to fraction form
    18,110.70/27,178.20 = 10,707.30/x
  3. Step 3: Cross multiply
    18,110.70x = 27,178.20 × 10,707.30
  4. Step 4: Simplify right side
    18,110.70x = 291,005,140.86
  5. Step 5: Solve for x
    x = 291,005,140.86/18,110.70
  6. Step 6: Final answer
    x = 16,068.13

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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.