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Finding the Fourth Proportional to 101,329.20, 152,048.52 and 42,205.68

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Solution

The fourth proportional to 101,329.20, 152,048.52 and 42,205.68 is: 63,331.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,329.20 : 152,048.52 = 42,205.68 : x
  2. Step 2: Convert to fraction form
    101,329.20/152,048.52 = 42,205.68/x
  3. Step 3: Cross multiply
    101,329.20x = 152,048.52 × 42,205.68
  4. Step 4: Simplify right side
    101,329.20x = 6,417,311,179.59
  5. Step 5: Solve for x
    x = 6,417,311,179.59/101,329.20
  6. Step 6: Final answer
    x = 63,331.31

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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.