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Finding the Fourth Proportional to 70,847.16, 106,276.95 and 18,256.56

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Solution

The fourth proportional to 70,847.16, 106,276.95 and 18,256.56 is: 27,386.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,847.16 : 106,276.95 = 18,256.56 : x
  2. Step 2: Convert to fraction form
    70,847.16/106,276.95 = 18,256.56/x
  3. Step 3: Cross multiply
    70,847.16x = 106,276.95 × 18,256.56
  4. Step 4: Simplify right side
    70,847.16x = 1,940,251,514.29
  5. Step 5: Solve for x
    x = 1,940,251,514.29/70,847.16
  6. Step 6: Final answer
    x = 27,386.44

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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.