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Finding the Fourth Proportional to 121,044.65, 167,061.89 and 70,048.60

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Solution

The fourth proportional to 121,044.65, 167,061.89 and 70,048.60 is: 96,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,044.65 : 167,061.89 = 70,048.60 : x
  2. Step 2: Convert to fraction form
    121,044.65/167,061.89 = 70,048.60/x
  3. Step 3: Cross multiply
    121,044.65x = 167,061.89 × 70,048.60
  4. Step 4: Simplify right side
    121,044.65x = 11,702,451,265.32
  5. Step 5: Solve for x
    x = 11,702,451,265.32/121,044.65
  6. Step 6: Final answer
    x = 96,678.80

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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.