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Finding the Fourth Proportional to 68,160.40, 102,021.90 and 48,477.40

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Solution

The fourth proportional to 68,160.40, 102,021.90 and 48,477.40 is: 72,560.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,160.40 : 102,021.90 = 48,477.40 : x
  2. Step 2: Convert to fraction form
    68,160.40/102,021.90 = 48,477.40/x
  3. Step 3: Cross multiply
    68,160.40x = 102,021.90 × 48,477.40
  4. Step 4: Simplify right side
    68,160.40x = 4,945,756,455.06
  5. Step 5: Solve for x
    x = 4,945,756,455.06/68,160.40
  6. Step 6: Final answer
    x = 72,560.56

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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.