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Finding the Fourth Proportional to 70,078.08, 96,699.24 and 39,867.24

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Solution

The fourth proportional to 70,078.08, 96,699.24 and 39,867.24 is: 55,011.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,078.08 : 96,699.24 = 39,867.24 : x
  2. Step 2: Convert to fraction form
    70,078.08/96,699.24 = 39,867.24/x
  3. Step 3: Cross multiply
    70,078.08x = 96,699.24 × 39,867.24
  4. Step 4: Simplify right side
    70,078.08x = 3,855,131,808.90
  5. Step 5: Solve for x
    x = 3,855,131,808.90/70,078.08
  6. Step 6: Final answer
    x = 55,011.95

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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.