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Finding the Fourth Proportional to 104,047.40, 155,807.10 and 57,247.40

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Solution

The fourth proportional to 104,047.40, 155,807.10 and 57,247.40 is: 85,725.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,047.40 : 155,807.10 = 57,247.40 : x
  2. Step 2: Convert to fraction form
    104,047.40/155,807.10 = 57,247.40/x
  3. Step 3: Cross multiply
    104,047.40x = 155,807.10 × 57,247.40
  4. Step 4: Simplify right side
    104,047.40x = 8,919,551,376.54
  5. Step 5: Solve for x
    x = 8,919,551,376.54/104,047.40
  6. Step 6: Final answer
    x = 85,725.85

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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.