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Finding the Fourth Proportional to 73,776.70, 101,821 and 45,090.46

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Solution

The fourth proportional to 73,776.70, 101,821 and 45,090.46 is: 62,230.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,776.70 : 101,821 = 45,090.46 : x
  2. Step 2: Convert to fraction form
    73,776.70/101,821 = 45,090.46/x
  3. Step 3: Cross multiply
    73,776.70x = 101,821 × 45,090.46
  4. Step 4: Simplify right side
    73,776.70x = 4,591,155,727.66
  5. Step 5: Solve for x
    x = 4,591,155,727.66/73,776.70
  6. Step 6: Final answer
    x = 62,230.43

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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.