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Finding the Fourth Proportional to 91,292.78, 136,734.94 and 52,777.10

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Solution

The fourth proportional to 91,292.78, 136,734.94 and 52,777.10 is: 79,047.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,292.78 : 136,734.94 = 52,777.10 : x
  2. Step 2: Convert to fraction form
    91,292.78/136,734.94 = 52,777.10/x
  3. Step 3: Cross multiply
    91,292.78x = 136,734.94 × 52,777.10
  4. Step 4: Simplify right side
    91,292.78x = 7,216,473,601.87
  5. Step 5: Solve for x
    x = 7,216,473,601.87/91,292.78
  6. Step 6: Final answer
    x = 79,047.58

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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.