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Finding the Fourth Proportional to 52,633.48, 78,950.56 and 21,046.20

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Solution

The fourth proportional to 52,633.48, 78,950.56 and 21,046.20 is: 31,569.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,633.48 : 78,950.56 = 21,046.20 : x
  2. Step 2: Convert to fraction form
    52,633.48/78,950.56 = 21,046.20/x
  3. Step 3: Cross multiply
    52,633.48x = 78,950.56 × 21,046.20
  4. Step 4: Simplify right side
    52,633.48x = 1,661,608,881.12
  5. Step 5: Solve for x
    x = 1,661,608,881.12/52,633.48
  6. Step 6: Final answer
    x = 31,569.43

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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.