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Finding the Fourth Proportional to 121,500.51, 167,668.32 and 67,057.80

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Solution

The fourth proportional to 121,500.51, 167,668.32 and 67,057.80 is: 92,538.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,500.51 : 167,668.32 = 67,057.80 : x
  2. Step 2: Convert to fraction form
    121,500.51/167,668.32 = 67,057.80/x
  3. Step 3: Cross multiply
    121,500.51x = 167,668.32 × 67,057.80
  4. Step 4: Simplify right side
    121,500.51x = 11,243,468,668.90
  5. Step 5: Solve for x
    x = 11,243,468,668.90/121,500.51
  6. Step 6: Final answer
    x = 92,538.45

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1.5x scale

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.