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Finding the Fourth Proportional to 58,468.87, 87,703.11 and 21,028.88

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Solution

The fourth proportional to 58,468.87, 87,703.11 and 21,028.88 is: 31,543.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,468.87 : 87,703.11 = 21,028.88 : x
  2. Step 2: Convert to fraction form
    58,468.87/87,703.11 = 21,028.88/x
  3. Step 3: Cross multiply
    58,468.87x = 87,703.11 × 21,028.88
  4. Step 4: Simplify right side
    58,468.87x = 1,844,297,632.16
  5. Step 5: Solve for x
    x = 1,844,297,632.16/58,468.87
  6. Step 6: Final answer
    x = 31,543.24

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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.