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Finding the Fourth Proportional to 104,816.80, 157,234.80 and 42,474.40

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Solution

The fourth proportional to 104,816.80, 157,234.80 and 42,474.40 is: 63,715.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,816.80 : 157,234.80 = 42,474.40 : x
  2. Step 2: Convert to fraction form
    104,816.80/157,234.80 = 42,474.40/x
  3. Step 3: Cross multiply
    104,816.80x = 157,234.80 × 42,474.40
  4. Step 4: Simplify right side
    104,816.80x = 6,678,453,789.12
  5. Step 5: Solve for x
    x = 6,678,453,789.12/104,816.80
  6. Step 6: Final answer
    x = 63,715.49

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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.