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Finding the Fourth Proportional to 65,307.92, 90,119.16 and 36,237.02

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Solution

The fourth proportional to 65,307.92, 90,119.16 and 36,237.02 is: 50,003.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,307.92 : 90,119.16 = 36,237.02 : x
  2. Step 2: Convert to fraction form
    65,307.92/90,119.16 = 36,237.02/x
  3. Step 3: Cross multiply
    65,307.92x = 90,119.16 × 36,237.02
  4. Step 4: Simplify right side
    65,307.92x = 3,265,649,352.71
  5. Step 5: Solve for x
    x = 3,265,649,352.71/65,307.92
  6. Step 6: Final answer
    x = 50,003.88

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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.