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Finding the Fourth Proportional to 122,056.78, 183,085.78 and 43,171.08

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Solution

The fourth proportional to 122,056.78, 183,085.78 and 43,171.08 is: 64,756.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,056.78 : 183,085.78 = 43,171.08 : x
  2. Step 2: Convert to fraction form
    122,056.78/183,085.78 = 43,171.08/x
  3. Step 3: Cross multiply
    122,056.78x = 183,085.78 × 43,171.08
  4. Step 4: Simplify right side
    122,056.78x = 7,904,010,855.24
  5. Step 5: Solve for x
    x = 7,904,010,855.24/122,056.78
  6. Step 6: Final answer
    x = 64,756.84

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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.