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Finding the Fourth Proportional to 65,373.92, 90,225.36 and 36,696.64

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Solution

The fourth proportional to 65,373.92, 90,225.36 and 36,696.64 is: 50,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,373.92 : 90,225.36 = 36,696.64 : x
  2. Step 2: Convert to fraction form
    65,373.92/90,225.36 = 36,696.64/x
  3. Step 3: Cross multiply
    65,373.92x = 90,225.36 × 36,696.64
  4. Step 4: Simplify right side
    65,373.92x = 3,310,967,554.79
  5. Step 5: Solve for x
    x = 3,310,967,554.79/65,373.92
  6. Step 6: Final answer
    x = 50,646.61

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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.