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Finding the Fourth Proportional to 121,457.32, 167,614.41 and 67,752.80

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Solution

The fourth proportional to 121,457.32, 167,614.41 and 67,752.80 is: 93,500.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,457.32 : 167,614.41 = 67,752.80 : x
  2. Step 2: Convert to fraction form
    121,457.32/167,614.41 = 67,752.80/x
  3. Step 3: Cross multiply
    121,457.32x = 167,614.41 × 67,752.80
  4. Step 4: Simplify right side
    121,457.32x = 11,356,346,585.23
  5. Step 5: Solve for x
    x = 11,356,346,585.23/121,457.32
  6. Step 6: Final answer
    x = 93,500.72

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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.