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Finding the Fourth Proportional to 122,604.70, 183,998.31 and 91,088.14

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Solution

The fourth proportional to 122,604.70, 183,998.31 and 91,088.14 is: 136,700.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,604.70 : 183,998.31 = 91,088.14 : x
  2. Step 2: Convert to fraction form
    122,604.70/183,998.31 = 91,088.14/x
  3. Step 3: Cross multiply
    122,604.70x = 183,998.31 × 91,088.14
  4. Step 4: Simplify right side
    122,604.70x = 16,760,063,821.04
  5. Step 5: Solve for x
    x = 16,760,063,821.04/122,604.70
  6. Step 6: Final answer
    x = 136,700.01

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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.