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Finding the Fourth Proportional to 64,321.62, 88,761.66 and 35,640.06

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Solution

The fourth proportional to 64,321.62, 88,761.66 and 35,640.06 is: 49,182.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,321.62 : 88,761.66 = 35,640.06 : x
  2. Step 2: Convert to fraction form
    64,321.62/88,761.66 = 35,640.06/x
  3. Step 3: Cross multiply
    64,321.62x = 88,761.66 × 35,640.06
  4. Step 4: Simplify right side
    64,321.62x = 3,163,470,888.10
  5. Step 5: Solve for x
    x = 3,163,470,888.10/64,321.62
  6. Step 6: Final answer
    x = 49,182.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.