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Finding the Fourth Proportional to 122,325.90, 183,488.85 and 69,837.90

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Solution

The fourth proportional to 122,325.90, 183,488.85 and 69,837.90 is: 104,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,325.90 : 183,488.85 = 69,837.90 : x
  2. Step 2: Convert to fraction form
    122,325.90/183,488.85 = 69,837.90/x
  3. Step 3: Cross multiply
    122,325.90x = 183,488.85 × 69,837.90
  4. Step 4: Simplify right side
    122,325.90x = 12,814,475,957.42
  5. Step 5: Solve for x
    x = 12,814,475,957.42/122,325.90
  6. Step 6: Final answer
    x = 104,756.85

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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.