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Finding the Fourth Proportional to 98,562.40, 147,865.20 and 39,383.20

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Solution

The fourth proportional to 98,562.40, 147,865.20 and 39,383.20 is: 59,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,562.40 : 147,865.20 = 39,383.20 : x
  2. Step 2: Convert to fraction form
    98,562.40/147,865.20 = 39,383.20/x
  3. Step 3: Cross multiply
    98,562.40x = 147,865.20 × 39,383.20
  4. Step 4: Simplify right side
    98,562.40x = 5,823,404,744.64
  5. Step 5: Solve for x
    x = 5,823,404,744.64/98,562.40
  6. Step 6: Final answer
    x = 59,083.43

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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.