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Finding the Fourth Proportional to 123,813.99, 170,853.98 and 70,086.69

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Solution

The fourth proportional to 123,813.99, 170,853.98 and 70,086.69 is: 96,714.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,813.99 : 170,853.98 = 70,086.69 : x
  2. Step 2: Convert to fraction form
    123,813.99/170,853.98 = 70,086.69/x
  3. Step 3: Cross multiply
    123,813.99x = 170,853.98 × 70,086.69
  4. Step 4: Simplify right side
    123,813.99x = 11,974,589,581.09
  5. Step 5: Solve for x
    x = 11,974,589,581.09/123,813.99
  6. Step 6: Final answer
    x = 96,714.35

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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.