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Finding the Fourth Proportional to 43,293.64, 64,946.04 and 15,211.68

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Solution

The fourth proportional to 43,293.64, 64,946.04 and 15,211.68 is: 22,819.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,293.64 : 64,946.04 = 15,211.68 : x
  2. Step 2: Convert to fraction form
    43,293.64/64,946.04 = 15,211.68/x
  3. Step 3: Cross multiply
    43,293.64x = 64,946.04 × 15,211.68
  4. Step 4: Simplify right side
    43,293.64x = 987,938,377.75
  5. Step 5: Solve for x
    x = 987,938,377.75/43,293.64
  6. Step 6: Final answer
    x = 22,819.48

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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.