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Finding the Fourth Proportional to 65,911.77, 99,384.75 and 60,400.53

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Solution

The fourth proportional to 65,911.77, 99,384.75 and 60,400.53 is: 91,074.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.77 : 99,384.75 = 60,400.53 : x
  2. Step 2: Convert to fraction form
    65,911.77/99,384.75 = 60,400.53/x
  3. Step 3: Cross multiply
    65,911.77x = 99,384.75 × 60,400.53
  4. Step 4: Simplify right side
    65,911.77x = 6,002,891,573.92
  5. Step 5: Solve for x
    x = 6,002,891,573.92/65,911.77
  6. Step 6: Final answer
    x = 91,074.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.