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Finding the Fourth Proportional to 122,708.76, 184,063.08 and 43,812.72

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Solution

The fourth proportional to 122,708.76, 184,063.08 and 43,812.72 is: 65,719.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,708.76 : 184,063.08 = 43,812.72 : x
  2. Step 2: Convert to fraction form
    122,708.76/184,063.08 = 43,812.72/x
  3. Step 3: Cross multiply
    122,708.76x = 184,063.08 × 43,812.72
  4. Step 4: Simplify right side
    122,708.76x = 8,064,304,186.38
  5. Step 5: Solve for x
    x = 8,064,304,186.38/122,708.76
  6. Step 6: Final answer
    x = 65,719.06

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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.