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Finding the Fourth Proportional to 91,262.77, 136,561.10 and 53,840.77

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Solution

The fourth proportional to 91,262.77, 136,561.10 and 53,840.77 is: 80,564.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,262.77 : 136,561.10 = 53,840.77 : x
  2. Step 2: Convert to fraction form
    91,262.77/136,561.10 = 53,840.77/x
  3. Step 3: Cross multiply
    91,262.77x = 136,561.10 × 53,840.77
  4. Step 4: Simplify right side
    91,262.77x = 7,352,554,093.24
  5. Step 5: Solve for x
    x = 7,352,554,093.24/91,262.77
  6. Step 6: Final answer
    x = 80,564.67

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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.