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Finding the Fourth Proportional to 65,803.82, 90,803.70 and 38,941.58

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Solution

The fourth proportional to 65,803.82, 90,803.70 and 38,941.58 is: 53,736.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,803.82 : 90,803.70 = 38,941.58 : x
  2. Step 2: Convert to fraction form
    65,803.82/90,803.70 = 38,941.58/x
  3. Step 3: Cross multiply
    65,803.82x = 90,803.70 × 38,941.58
  4. Step 4: Simplify right side
    65,803.82x = 3,536,039,774.86
  5. Step 5: Solve for x
    x = 3,536,039,774.86/65,803.82
  6. Step 6: Final answer
    x = 53,736.09

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