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Finding the Fourth Proportional to 136,765.77, 205,240.29 and 48,019.56

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Solution

The fourth proportional to 136,765.77, 205,240.29 and 48,019.56 is: 72,061.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,765.77 : 205,240.29 = 48,019.56 : x
  2. Step 2: Convert to fraction form
    136,765.77/205,240.29 = 48,019.56/x
  3. Step 3: Cross multiply
    136,765.77x = 205,240.29 × 48,019.56
  4. Step 4: Simplify right side
    136,765.77x = 9,855,548,420.07
  5. Step 5: Solve for x
    x = 9,855,548,420.07/136,765.77
  6. Step 6: Final answer
    x = 72,061.51

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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.