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Finding the Fourth Proportional to 52,693.32, 72,717.36 and 28,819.49

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Solution

The fourth proportional to 52,693.32, 72,717.36 and 28,819.49 is: 39,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,693.32 : 72,717.36 = 28,819.49 : x
  2. Step 2: Convert to fraction form
    52,693.32/72,717.36 = 28,819.49/x
  3. Step 3: Cross multiply
    52,693.32x = 72,717.36 × 28,819.49
  4. Step 4: Simplify right side
    52,693.32x = 2,095,676,865.76
  5. Step 5: Solve for x
    x = 2,095,676,865.76/52,693.32
  6. Step 6: Final answer
    x = 39,771.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.