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Finding the Fourth Proportional to 73,147.84, 100,943.64 and 39,613.84

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Solution

The fourth proportional to 73,147.84, 100,943.64 and 39,613.84 is: 54,666.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,147.84 : 100,943.64 = 39,613.84 : x
  2. Step 2: Convert to fraction form
    73,147.84/100,943.64 = 39,613.84/x
  3. Step 3: Cross multiply
    73,147.84x = 100,943.64 × 39,613.84
  4. Step 4: Simplify right side
    73,147.84x = 3,998,765,203.98
  5. Step 5: Solve for x
    x = 3,998,765,203.98/73,147.84
  6. Step 6: Final answer
    x = 54,666.89

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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.