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Finding the Fourth Proportional to 122,174.40, 183,196.80 and 43,291.20

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Solution

The fourth proportional to 122,174.40, 183,196.80 and 43,291.20 is: 64,913.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,174.40 : 183,196.80 = 43,291.20 : x
  2. Step 2: Convert to fraction form
    122,174.40/183,196.80 = 43,291.20/x
  3. Step 3: Cross multiply
    122,174.40x = 183,196.80 × 43,291.20
  4. Step 4: Simplify right side
    122,174.40x = 7,930,809,308.16
  5. Step 5: Solve for x
    x = 7,930,809,308.16/122,174.40
  6. Step 6: Final answer
    x = 64,913.84

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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.