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Finding the Fourth Proportional to 52,608.60, 78,865.92 and 19,320.94

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Solution

The fourth proportional to 52,608.60, 78,865.92 and 19,320.94 is: 28,964.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,608.60 : 78,865.92 = 19,320.94 : x
  2. Step 2: Convert to fraction form
    52,608.60/78,865.92 = 19,320.94/x
  3. Step 3: Cross multiply
    52,608.60x = 78,865.92 × 19,320.94
  4. Step 4: Simplify right side
    52,608.60x = 1,523,763,708.36
  5. Step 5: Solve for x
    x = 1,523,763,708.36/52,608.60
  6. Step 6: Final answer
    x = 28,964.16

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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.