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Finding the Fourth Proportional to 70,083.60, 96,718.24 and 39,874.24

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Solution

The fourth proportional to 70,083.60, 96,718.24 and 39,874.24 is: 55,028.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,083.60 : 96,718.24 = 39,874.24 : x
  2. Step 2: Convert to fraction form
    70,083.60/96,718.24 = 39,874.24/x
  3. Step 3: Cross multiply
    70,083.60x = 96,718.24 × 39,874.24
  4. Step 4: Simplify right side
    70,083.60x = 3,856,566,314.14
  5. Step 5: Solve for x
    x = 3,856,566,314.14/70,083.60
  6. Step 6: Final answer
    x = 55,028.09

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1.5x scale

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.