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Finding the Fourth Proportional to 121,013.20, 181,606.20 and 68,366.80

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Solution

The fourth proportional to 121,013.20, 181,606.20 and 68,366.80 is: 102,599.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,013.20 : 181,606.20 = 68,366.80 : x
  2. Step 2: Convert to fraction form
    121,013.20/181,606.20 = 68,366.80/x
  3. Step 3: Cross multiply
    121,013.20x = 181,606.20 × 68,366.80
  4. Step 4: Simplify right side
    121,013.20x = 12,415,834,754.16
  5. Step 5: Solve for x
    x = 12,415,834,754.16/121,013.20
  6. Step 6: Final answer
    x = 102,599.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.