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Finding the Fourth Proportional to 121,396.98, 167,529.36 and 70,411.86

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Solution

The fourth proportional to 121,396.98, 167,529.36 and 70,411.86 is: 97,169.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,396.98 : 167,529.36 = 70,411.86 : x
  2. Step 2: Convert to fraction form
    121,396.98/167,529.36 = 70,411.86/x
  3. Step 3: Cross multiply
    121,396.98x = 167,529.36 × 70,411.86
  4. Step 4: Simplify right side
    121,396.98x = 11,796,053,842.21
  5. Step 5: Solve for x
    x = 11,796,053,842.21/121,396.98
  6. Step 6: Final answer
    x = 97,169.25

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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.