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Finding the Fourth Proportional to 122,931.88, 184,429.50 and 66,757.57

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Solution

The fourth proportional to 122,931.88, 184,429.50 and 66,757.57 is: 100,153.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,931.88 : 184,429.50 = 66,757.57 : x
  2. Step 2: Convert to fraction form
    122,931.88/184,429.50 = 66,757.57/x
  3. Step 3: Cross multiply
    122,931.88x = 184,429.50 × 66,757.57
  4. Step 4: Simplify right side
    122,931.88x = 12,312,065,256.32
  5. Step 5: Solve for x
    x = 12,312,065,256.32/122,931.88
  6. Step 6: Final answer
    x = 100,153.56

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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.