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Finding the Fourth Proportional to 121,487.23, 167,652.85 and 67,776.33

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Solution

The fourth proportional to 121,487.23, 167,652.85 and 67,776.33 is: 93,531.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,487.23 : 167,652.85 = 67,776.33 : x
  2. Step 2: Convert to fraction form
    121,487.23/167,652.85 = 67,776.33/x
  3. Step 3: Cross multiply
    121,487.23x = 167,652.85 × 67,776.33
  4. Step 4: Simplify right side
    121,487.23x = 11,362,894,887.04
  5. Step 5: Solve for x
    x = 11,362,894,887.04/121,487.23
  6. Step 6: Final answer
    x = 93,531.60

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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.