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Finding the Fourth Proportional to 122,962.60, 184,443.90 and 108,447.40

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Solution

The fourth proportional to 122,962.60, 184,443.90 and 108,447.40 is: 162,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,962.60 : 184,443.90 = 108,447.40 : x
  2. Step 2: Convert to fraction form
    122,962.60/184,443.90 = 108,447.40/x
  3. Step 3: Cross multiply
    122,962.60x = 184,443.90 × 108,447.40
  4. Step 4: Simplify right side
    122,962.60x = 20,002,461,400.86
  5. Step 5: Solve for x
    x = 20,002,461,400.86/122,962.60
  6. Step 6: Final answer
    x = 162,671.10

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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.