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Finding the Fourth Proportional to 65,889.18, 90,926.93 and 35,674.53

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Solution

The fourth proportional to 65,889.18, 90,926.93 and 35,674.53 is: 49,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,889.18 : 90,926.93 = 35,674.53 : x
  2. Step 2: Convert to fraction form
    65,889.18/90,926.93 = 35,674.53/x
  3. Step 3: Cross multiply
    65,889.18x = 90,926.93 × 35,674.53
  4. Step 4: Simplify right side
    65,889.18x = 3,243,775,492.09
  5. Step 5: Solve for x
    x = 3,243,775,492.09/65,889.18
  6. Step 6: Final answer
    x = 49,230.78

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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.