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Finding the Fourth Proportional to 99,694.99, 137,574.23 and 59,407.85

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Solution

The fourth proportional to 99,694.99, 137,574.23 and 59,407.85 is: 81,979.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,694.99 : 137,574.23 = 59,407.85 : x
  2. Step 2: Convert to fraction form
    99,694.99/137,574.23 = 59,407.85/x
  3. Step 3: Cross multiply
    99,694.99x = 137,574.23 × 59,407.85
  4. Step 4: Simplify right side
    99,694.99x = 8,172,988,922.67
  5. Step 5: Solve for x
    x = 8,172,988,922.67/99,694.99
  6. Step 6: Final answer
    x = 81,979.94

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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.