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Finding the Fourth Proportional to 18,532, 25,574.16 and 11,081.76

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Solution

The fourth proportional to 18,532, 25,574.16 and 11,081.76 is: 15,292.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,532 : 25,574.16 = 11,081.76 : x
  2. Step 2: Convert to fraction form
    18,532/25,574.16 = 11,081.76/x
  3. Step 3: Cross multiply
    18,532x = 25,574.16 × 11,081.76
  4. Step 4: Simplify right side
    18,532x = 283,406,703.32
  5. Step 5: Solve for x
    x = 283,406,703.32/18,532
  6. Step 6: Final answer
    x = 15,292.83

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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.