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Finding the Fourth Proportional to 91,348.46, 136,828.02 and 43,893.80

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Solution

The fourth proportional to 91,348.46, 136,828.02 and 43,893.80 is: 65,747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,348.46 : 136,828.02 = 43,893.80 : x
  2. Step 2: Convert to fraction form
    91,348.46/136,828.02 = 43,893.80/x
  3. Step 3: Cross multiply
    91,348.46x = 136,828.02 × 43,893.80
  4. Step 4: Simplify right side
    91,348.46x = 6,005,901,744.28
  5. Step 5: Solve for x
    x = 6,005,901,744.28/91,348.46
  6. Step 6: Final answer
    x = 65,747.16

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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.