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Finding the Fourth Proportional to 73,131.19, 100,921.04 and 39,597.19

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Solution

The fourth proportional to 73,131.19, 100,921.04 and 39,597.19 is: 54,644.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,131.19 : 100,921.04 = 39,597.19 : x
  2. Step 2: Convert to fraction form
    73,131.19/100,921.04 = 39,597.19/x
  3. Step 3: Cross multiply
    73,131.19x = 100,921.04 × 39,597.19
  4. Step 4: Simplify right side
    73,131.19x = 3,996,189,294.08
  5. Step 5: Solve for x
    x = 3,996,189,294.08/73,131.19
  6. Step 6: Final answer
    x = 54,644.12

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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.