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Finding the Fourth Proportional to 70,206.39, 96,873.51 and 39,992.30

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Solution

The fourth proportional to 70,206.39, 96,873.51 and 39,992.30 is: 55,182.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,206.39 : 96,873.51 = 39,992.30 : x
  2. Step 2: Convert to fraction form
    70,206.39/96,873.51 = 39,992.30/x
  3. Step 3: Cross multiply
    70,206.39x = 96,873.51 × 39,992.30
  4. Step 4: Simplify right side
    70,206.39x = 3,874,194,473.97
  5. Step 5: Solve for x
    x = 3,874,194,473.97/70,206.39
  6. Step 6: Final answer
    x = 55,182.93

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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.