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Finding the Fourth Proportional to 124,469.65, 171,783.55 and 76,061.62

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Solution

The fourth proportional to 124,469.65, 171,783.55 and 76,061.62 is: 104,974.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,469.65 : 171,783.55 = 76,061.62 : x
  2. Step 2: Convert to fraction form
    124,469.65/171,783.55 = 76,061.62/x
  3. Step 3: Cross multiply
    124,469.65x = 171,783.55 × 76,061.62
  4. Step 4: Simplify right side
    124,469.65x = 13,066,135,102.35
  5. Step 5: Solve for x
    x = 13,066,135,102.35/124,469.65
  6. Step 6: Final answer
    x = 104,974.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.