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Finding the Fourth Proportional to 122,693.40, 184,040.10 and 121,915.80

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Solution

The fourth proportional to 122,693.40, 184,040.10 and 121,915.80 is: 182,873.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,693.40 : 184,040.10 = 121,915.80 : x
  2. Step 2: Convert to fraction form
    122,693.40/184,040.10 = 121,915.80/x
  3. Step 3: Cross multiply
    122,693.40x = 184,040.10 × 121,915.80
  4. Step 4: Simplify right side
    122,693.40x = 22,437,396,023.58
  5. Step 5: Solve for x
    x = 22,437,396,023.58/122,693.40
  6. Step 6: Final answer
    x = 182,873.70

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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.