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Finding the Fourth Proportional to 91,046.63, 136,640.12 and 59,448.13

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Solution

The fourth proportional to 91,046.63, 136,640.12 and 59,448.13 is: 89,218.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,046.63 : 136,640.12 = 59,448.13 : x
  2. Step 2: Convert to fraction form
    91,046.63/136,640.12 = 59,448.13/x
  3. Step 3: Cross multiply
    91,046.63x = 136,640.12 × 59,448.13
  4. Step 4: Simplify right side
    91,046.63x = 8,122,998,978.13
  5. Step 5: Solve for x
    x = 8,122,998,978.13/91,046.63
  6. Step 6: Final answer
    x = 89,218.01

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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.