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Finding the Fourth Proportional to 121,772.01, 168,048.85 and 68,057.16

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Solution

The fourth proportional to 121,772.01, 168,048.85 and 68,057.16 is: 93,920.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,772.01 : 168,048.85 = 68,057.16 : x
  2. Step 2: Convert to fraction form
    121,772.01/168,048.85 = 68,057.16/x
  3. Step 3: Cross multiply
    121,772.01x = 168,048.85 × 68,057.16
  4. Step 4: Simplify right side
    121,772.01x = 11,436,927,936.23
  5. Step 5: Solve for x
    x = 11,436,927,936.23/121,772.01
  6. Step 6: Final answer
    x = 93,920.83

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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.