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Finding the Fourth Proportional to 122,320.99, 168,813.13 and 67,878.27

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Solution

The fourth proportional to 122,320.99, 168,813.13 and 67,878.27 is: 93,677.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,320.99 : 168,813.13 = 67,878.27 : x
  2. Step 2: Convert to fraction form
    122,320.99/168,813.13 = 67,878.27/x
  3. Step 3: Cross multiply
    122,320.99x = 168,813.13 × 67,878.27
  4. Step 4: Simplify right side
    122,320.99x = 11,458,743,047.99
  5. Step 5: Solve for x
    x = 11,458,743,047.99/122,320.99
  6. Step 6: Final answer
    x = 93,677.65

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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.