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Finding the Fourth Proportional to 64,759.50, 89,368.38 and 36,465.66

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Solution

The fourth proportional to 64,759.50, 89,368.38 and 36,465.66 is: 50,322.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,759.50 : 89,368.38 = 36,465.66 : x
  2. Step 2: Convert to fraction form
    64,759.50/89,368.38 = 36,465.66/x
  3. Step 3: Cross multiply
    64,759.50x = 89,368.38 × 36,465.66
  4. Step 4: Simplify right side
    64,759.50x = 3,258,876,959.83
  5. Step 5: Solve for x
    x = 3,258,876,959.83/64,759.50
  6. Step 6: Final answer
    x = 50,322.76

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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.