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Finding the Fourth Proportional to 18,149.23, 25,048.65 and 11,079.76

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Solution

The fourth proportional to 18,149.23, 25,048.65 and 11,079.76 is: 15,291.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.23 : 25,048.65 = 11,079.76 : x
  2. Step 2: Convert to fraction form
    18,149.23/25,048.65 = 11,079.76/x
  3. Step 3: Cross multiply
    18,149.23x = 25,048.65 × 11,079.76
  4. Step 4: Simplify right side
    18,149.23x = 277,533,030.32
  5. Step 5: Solve for x
    x = 277,533,030.32/18,149.23
  6. Step 6: Final answer
    x = 15,291.72

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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.