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Finding the Fourth Proportional to 91,262.88, 136,894.32 and 59,699.48

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Solution

The fourth proportional to 91,262.88, 136,894.32 and 59,699.48 is: 89,549.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,262.88 : 136,894.32 = 59,699.48 : x
  2. Step 2: Convert to fraction form
    91,262.88/136,894.32 = 59,699.48/x
  3. Step 3: Cross multiply
    91,262.88x = 136,894.32 × 59,699.48
  4. Step 4: Simplify right side
    91,262.88x = 8,172,519,718.95
  5. Step 5: Solve for x
    x = 8,172,519,718.95/91,262.88
  6. Step 6: Final answer
    x = 89,549.22

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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.