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Finding the Fourth Proportional to 65,885.98, 90,922.70 and 35,671.32

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Solution

The fourth proportional to 65,885.98, 90,922.70 and 35,671.32 is: 49,226.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,885.98 : 90,922.70 = 35,671.32 : x
  2. Step 2: Convert to fraction form
    65,885.98/90,922.70 = 35,671.32/x
  3. Step 3: Cross multiply
    65,885.98x = 90,922.70 × 35,671.32
  4. Step 4: Simplify right side
    65,885.98x = 3,243,332,816.14
  5. Step 5: Solve for x
    x = 3,243,332,816.14/65,885.98
  6. Step 6: Final answer
    x = 49,226.45

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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.