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Finding the Fourth Proportional to 120,006.60, 179,621.10 and 106,009.80

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Solution

The fourth proportional to 120,006.60, 179,621.10 and 106,009.80 is: 158,671.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,006.60 : 179,621.10 = 106,009.80 : x
  2. Step 2: Convert to fraction form
    120,006.60/179,621.10 = 106,009.80/x
  3. Step 3: Cross multiply
    120,006.60x = 179,621.10 × 106,009.80
  4. Step 4: Simplify right side
    120,006.60x = 19,041,596,886.78
  5. Step 5: Solve for x
    x = 19,041,596,886.78/120,006.60
  6. Step 6: Final answer
    x = 158,671.25

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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.