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Finding the Fourth Proportional to 104,665.80, 157,035.15 and 45,543.90

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Solution

The fourth proportional to 104,665.80, 157,035.15 and 45,543.90 is: 68,331.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,665.80 : 157,035.15 = 45,543.90 : x
  2. Step 2: Convert to fraction form
    104,665.80/157,035.15 = 45,543.90/x
  3. Step 3: Cross multiply
    104,665.80x = 157,035.15 × 45,543.90
  4. Step 4: Simplify right side
    104,665.80x = 7,151,993,168.09
  5. Step 5: Solve for x
    x = 7,151,993,168.09/104,665.80
  6. Step 6: Final answer
    x = 68,331.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.