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Finding the Fourth Proportional to 52,488.57, 78,764.72 and 21,323.01

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Solution

The fourth proportional to 52,488.57, 78,764.72 and 21,323.01 is: 31,997.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,488.57 : 78,764.72 = 21,323.01 : x
  2. Step 2: Convert to fraction form
    52,488.57/78,764.72 = 21,323.01/x
  3. Step 3: Cross multiply
    52,488.57x = 78,764.72 × 21,323.01
  4. Step 4: Simplify right side
    52,488.57x = 1,679,500,805.59
  5. Step 5: Solve for x
    x = 1,679,500,805.59/52,488.57
  6. Step 6: Final answer
    x = 31,997.46

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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.