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Finding the Fourth Proportional to 65,813.16, 90,821.94 and 35,598.54

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Solution

The fourth proportional to 65,813.16, 90,821.94 and 35,598.54 is: 49,125.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,813.16 : 90,821.94 = 35,598.54 : x
  2. Step 2: Convert to fraction form
    65,813.16/90,821.94 = 35,598.54/x
  3. Step 3: Cross multiply
    65,813.16x = 90,821.94 × 35,598.54
  4. Step 4: Simplify right side
    65,813.16x = 3,233,128,463.97
  5. Step 5: Solve for x
    x = 3,233,128,463.97/65,813.16
  6. Step 6: Final answer
    x = 49,125.87

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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.