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Finding the Fourth Proportional to 121,756.01, 168,039.18 and 68,052.20

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Solution

The fourth proportional to 121,756.01, 168,039.18 and 68,052.20 is: 93,920.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,756.01 : 168,039.18 = 68,052.20 : x
  2. Step 2: Convert to fraction form
    121,756.01/168,039.18 = 68,052.20/x
  3. Step 3: Cross multiply
    121,756.01x = 168,039.18 × 68,052.20
  4. Step 4: Simplify right side
    121,756.01x = 11,435,435,045.00
  5. Step 5: Solve for x
    x = 11,435,435,045.00/121,756.01
  6. Step 6: Final answer
    x = 93,920.91

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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.