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Finding the Fourth Proportional to 70,935.68, 97,891.60 and 39,103.92

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Solution

The fourth proportional to 70,935.68, 97,891.60 and 39,103.92 is: 53,963.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,935.68 : 97,891.60 = 39,103.92 : x
  2. Step 2: Convert to fraction form
    70,935.68/97,891.60 = 39,103.92/x
  3. Step 3: Cross multiply
    70,935.68x = 97,891.60 × 39,103.92
  4. Step 4: Simplify right side
    70,935.68x = 3,827,945,295.07
  5. Step 5: Solve for x
    x = 3,827,945,295.07/70,935.68
  6. Step 6: Final answer
    x = 53,963.61

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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.