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Finding the Fourth Proportional to 18,860.76, 26,046.72 and 15,536.52

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Solution

The fourth proportional to 18,860.76, 26,046.72 and 15,536.52 is: 21,455.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.76 : 26,046.72 = 15,536.52 : x
  2. Step 2: Convert to fraction form
    18,860.76/26,046.72 = 15,536.52/x
  3. Step 3: Cross multiply
    18,860.76x = 26,046.72 × 15,536.52
  4. Step 4: Simplify right side
    18,860.76x = 404,675,386.21
  5. Step 5: Solve for x
    x = 404,675,386.21/18,860.76
  6. Step 6: Final answer
    x = 21,455.94

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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.