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Finding the Fourth Proportional to 72,802.80, 109,252.80 and 41,212.80

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Solution

The fourth proportional to 72,802.80, 109,252.80 and 41,212.80 is: 61,846.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,802.80 : 109,252.80 = 41,212.80 : x
  2. Step 2: Convert to fraction form
    72,802.80/109,252.80 = 41,212.80/x
  3. Step 3: Cross multiply
    72,802.80x = 109,252.80 × 41,212.80
  4. Step 4: Simplify right side
    72,802.80x = 4,502,613,795.84
  5. Step 5: Solve for x
    x = 4,502,613,795.84/72,802.80
  6. Step 6: Final answer
    x = 61,846.71

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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.