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Finding the Fourth Proportional to 70,935.52, 97,891.68 and 39,105.56

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Solution

The fourth proportional to 70,935.52, 97,891.68 and 39,105.56 is: 53,966.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,935.52 : 97,891.68 = 39,105.56 : x
  2. Step 2: Convert to fraction form
    70,935.52/97,891.68 = 39,105.56/x
  3. Step 3: Cross multiply
    70,935.52x = 97,891.68 × 39,105.56
  4. Step 4: Simplify right side
    70,935.52x = 3,828,108,806.83
  5. Step 5: Solve for x
    x = 3,828,108,806.83/70,935.52
  6. Step 6: Final answer
    x = 53,966.03

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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.