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Finding the Fourth Proportional to 122,962.60, 184,443.90 and 39,856.60

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Solution

The fourth proportional to 122,962.60, 184,443.90 and 39,856.60 is: 59,784.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,962.60 : 184,443.90 = 39,856.60 : x
  2. Step 2: Convert to fraction form
    122,962.60/184,443.90 = 39,856.60/x
  3. Step 3: Cross multiply
    122,962.60x = 184,443.90 × 39,856.60
  4. Step 4: Simplify right side
    122,962.60x = 7,351,306,744.74
  5. Step 5: Solve for x
    x = 7,351,306,744.74/122,962.60
  6. Step 6: Final answer
    x = 59,784.90

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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.