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Finding the Fourth Proportional to 65,159.42, 89,928.48 and 36,490.01

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Solution

The fourth proportional to 65,159.42, 89,928.48 and 36,490.01 is: 50,360.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,159.42 : 89,928.48 = 36,490.01 : x
  2. Step 2: Convert to fraction form
    65,159.42/89,928.48 = 36,490.01/x
  3. Step 3: Cross multiply
    65,159.42x = 89,928.48 × 36,490.01
  4. Step 4: Simplify right side
    65,159.42x = 3,281,491,134.48
  5. Step 5: Solve for x
    x = 3,281,491,134.48/65,159.42
  6. Step 6: Final answer
    x = 50,360.96

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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.