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Finding the Fourth Proportional to 146,141.80, 219,212.70 and 47,645.80

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Solution

The fourth proportional to 146,141.80, 219,212.70 and 47,645.80 is: 71,468.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,141.80 : 219,212.70 = 47,645.80 : x
  2. Step 2: Convert to fraction form
    146,141.80/219,212.70 = 47,645.80/x
  3. Step 3: Cross multiply
    146,141.80x = 219,212.70 × 47,645.80
  4. Step 4: Simplify right side
    146,141.80x = 10,444,564,461.66
  5. Step 5: Solve for x
    x = 10,444,564,461.66/146,141.80
  6. Step 6: Final answer
    x = 71,468.70

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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.