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Finding the Fourth Proportional to 64,912.40, 97,371.80 and 33,808.40

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Solution

The fourth proportional to 64,912.40, 97,371.80 and 33,808.40 is: 50,714.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,912.40 : 97,371.80 = 33,808.40 : x
  2. Step 2: Convert to fraction form
    64,912.40/97,371.80 = 33,808.40/x
  3. Step 3: Cross multiply
    64,912.40x = 97,371.80 × 33,808.40
  4. Step 4: Simplify right side
    64,912.40x = 3,291,984,763.12
  5. Step 5: Solve for x
    x = 3,291,984,763.12/64,912.40
  6. Step 6: Final answer
    x = 50,714.27

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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.