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Finding the Fourth Proportional to 58,067.67, 87,140.34 and 21,131.67

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Solution

The fourth proportional to 58,067.67, 87,140.34 and 21,131.67 is: 31,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,067.67 : 87,140.34 = 21,131.67 : x
  2. Step 2: Convert to fraction form
    58,067.67/87,140.34 = 21,131.67/x
  3. Step 3: Cross multiply
    58,067.67x = 87,140.34 × 21,131.67
  4. Step 4: Simplify right side
    58,067.67x = 1,841,420,908.57
  5. Step 5: Solve for x
    x = 1,841,420,908.57/58,067.67
  6. Step 6: Final answer
    x = 31,711.64

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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.