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Finding the Fourth Proportional to 122,931.60, 184,390.11 and 42,963.95

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Solution

The fourth proportional to 122,931.60, 184,390.11 and 42,963.95 is: 64,443.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,931.60 : 184,390.11 = 42,963.95 : x
  2. Step 2: Convert to fraction form
    122,931.60/184,390.11 = 42,963.95/x
  3. Step 3: Cross multiply
    122,931.60x = 184,390.11 × 42,963.95
  4. Step 4: Simplify right side
    122,931.60x = 7,922,126,544.58
  5. Step 5: Solve for x
    x = 7,922,126,544.58/122,931.60
  6. Step 6: Final answer
    x = 64,443.37

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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.