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Finding the Fourth Proportional to 64,662.20, 96,994.92 and 17,915.48

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Solution

The fourth proportional to 64,662.20, 96,994.92 and 17,915.48 is: 26,873.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,662.20 : 96,994.92 = 17,915.48 : x
  2. Step 2: Convert to fraction form
    64,662.20/96,994.92 = 17,915.48/x
  3. Step 3: Cross multiply
    64,662.20x = 96,994.92 × 17,915.48
  4. Step 4: Simplify right side
    64,662.20x = 1,737,710,549.36
  5. Step 5: Solve for x
    x = 1,737,710,549.36/64,662.20
  6. Step 6: Final answer
    x = 26,873.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.