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Finding the Fourth Proportional to 64,190.70, 88,581.50 and 35,509.61

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Solution

The fourth proportional to 64,190.70, 88,581.50 and 35,509.61 is: 49,002.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,190.70 : 88,581.50 = 35,509.61 : x
  2. Step 2: Convert to fraction form
    64,190.70/88,581.50 = 35,509.61/x
  3. Step 3: Cross multiply
    64,190.70x = 88,581.50 × 35,509.61
  4. Step 4: Simplify right side
    64,190.70x = 3,145,494,518.22
  5. Step 5: Solve for x
    x = 3,145,494,518.22/64,190.70
  6. Step 6: Final answer
    x = 49,002.34

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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.