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Finding the Fourth Proportional to 18,053.13, 27,080.25 and 4,905.78

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Solution

The fourth proportional to 18,053.13, 27,080.25 and 4,905.78 is: 7,358.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,053.13 : 27,080.25 = 4,905.78 : x
  2. Step 2: Convert to fraction form
    18,053.13/27,080.25 = 4,905.78/x
  3. Step 3: Cross multiply
    18,053.13x = 27,080.25 × 4,905.78
  4. Step 4: Simplify right side
    18,053.13x = 132,849,748.85
  5. Step 5: Solve for x
    x = 132,849,748.85/18,053.13
  6. Step 6: Final answer
    x = 7,358.82

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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.