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Finding the Fourth Proportional to 170,494.84, 255,816.02 and 91,516.87

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Solution

The fourth proportional to 170,494.84, 255,816.02 and 91,516.87 is: 137,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,494.84 : 255,816.02 = 91,516.87 : x
  2. Step 2: Convert to fraction form
    170,494.84/255,816.02 = 91,516.87/x
  3. Step 3: Cross multiply
    170,494.84x = 255,816.02 × 91,516.87
  4. Step 4: Simplify right side
    170,494.84x = 23,411,481,446.26
  5. Step 5: Solve for x
    x = 23,411,481,446.26/170,494.84
  6. Step 6: Final answer
    x = 137,314.90

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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.