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Finding the Fourth Proportional to 70,391.17, 105,621.45 and 32,953.78

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Solution

The fourth proportional to 70,391.17, 105,621.45 and 32,953.78 is: 49,446.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,391.17 : 105,621.45 = 32,953.78 : x
  2. Step 2: Convert to fraction form
    70,391.17/105,621.45 = 32,953.78/x
  3. Step 3: Cross multiply
    70,391.17x = 105,621.45 × 32,953.78
  4. Step 4: Simplify right side
    70,391.17x = 3,480,626,026.58
  5. Step 5: Solve for x
    x = 3,480,626,026.58/70,391.17
  6. Step 6: Final answer
    x = 49,446.91

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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.