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Finding the Fourth Proportional to 112,601.64, 168,951.48 and 70,578

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Solution

The fourth proportional to 112,601.64, 168,951.48 and 70,578 is: 105,897.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,601.64 : 168,951.48 = 70,578 : x
  2. Step 2: Convert to fraction form
    112,601.64/168,951.48 = 70,578/x
  3. Step 3: Cross multiply
    112,601.64x = 168,951.48 × 70,578
  4. Step 4: Simplify right side
    112,601.64x = 11,924,257,555.44
  5. Step 5: Solve for x
    x = 11,924,257,555.44/112,601.64
  6. Step 6: Final answer
    x = 105,897.73

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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.