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Finding the Fourth Proportional to 122,116.70, 183,207.45 and 43,222.70

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Solution

The fourth proportional to 122,116.70, 183,207.45 and 43,222.70 is: 64,845.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,116.70 : 183,207.45 = 43,222.70 : x
  2. Step 2: Convert to fraction form
    122,116.70/183,207.45 = 43,222.70/x
  3. Step 3: Cross multiply
    122,116.70x = 183,207.45 × 43,222.70
  4. Step 4: Simplify right side
    122,116.70x = 7,918,720,649.12
  5. Step 5: Solve for x
    x = 7,918,720,649.12/122,116.70
  6. Step 6: Final answer
    x = 64,845.52

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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.