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Finding the Fourth Proportional to 122,362.10, 183,543.15 and 80,506.70

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Solution

The fourth proportional to 122,362.10, 183,543.15 and 80,506.70 is: 120,760.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,362.10 : 183,543.15 = 80,506.70 : x
  2. Step 2: Convert to fraction form
    122,362.10/183,543.15 = 80,506.70/x
  3. Step 3: Cross multiply
    122,362.10x = 183,543.15 × 80,506.70
  4. Step 4: Simplify right side
    122,362.10x = 14,776,453,314.11
  5. Step 5: Solve for x
    x = 14,776,453,314.11/122,362.10
  6. Step 6: Final answer
    x = 120,760.05

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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.