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Finding the Fourth Proportional to 108,057.72, 149,121.90 and 60,313.08

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Solution

The fourth proportional to 108,057.72, 149,121.90 and 60,313.08 is: 83,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,057.72 : 149,121.90 = 60,313.08 : x
  2. Step 2: Convert to fraction form
    108,057.72/149,121.90 = 60,313.08/x
  3. Step 3: Cross multiply
    108,057.72x = 149,121.90 × 60,313.08
  4. Step 4: Simplify right side
    108,057.72x = 8,994,001,084.45
  5. Step 5: Solve for x
    x = 8,994,001,084.45/108,057.72
  6. Step 6: Final answer
    x = 83,233.30

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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.