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Finding the Fourth Proportional to 64,836.50, 89,474.38 and 35,028.50

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Solution

The fourth proportional to 64,836.50, 89,474.38 and 35,028.50 is: 48,339.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,836.50 : 89,474.38 = 35,028.50 : x
  2. Step 2: Convert to fraction form
    64,836.50/89,474.38 = 35,028.50/x
  3. Step 3: Cross multiply
    64,836.50x = 89,474.38 × 35,028.50
  4. Step 4: Simplify right side
    64,836.50x = 3,134,153,319.83
  5. Step 5: Solve for x
    x = 3,134,153,319.83/64,836.50
  6. Step 6: Final answer
    x = 48,339.34

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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.