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Finding the Fourth Proportional to 144,007.01, 215,991.54 and 42,802.90

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Solution

The fourth proportional to 144,007.01, 215,991.54 and 42,802.90 is: 64,198.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,007.01 : 215,991.54 = 42,802.90 : x
  2. Step 2: Convert to fraction form
    144,007.01/215,991.54 = 42,802.90/x
  3. Step 3: Cross multiply
    144,007.01x = 215,991.54 × 42,802.90
  4. Step 4: Simplify right side
    144,007.01x = 9,245,063,747.49
  5. Step 5: Solve for x
    x = 9,245,063,747.49/144,007.01
  6. Step 6: Final answer
    x = 64,198.71

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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.