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Finding the Fourth Proportional to 73,581.60, 101,539.68 and 40,047.60

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Solution

The fourth proportional to 73,581.60, 101,539.68 and 40,047.60 is: 55,264.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,581.60 : 101,539.68 = 40,047.60 : x
  2. Step 2: Convert to fraction form
    73,581.60/101,539.68 = 40,047.60/x
  3. Step 3: Cross multiply
    73,581.60x = 101,539.68 × 40,047.60
  4. Step 4: Simplify right side
    73,581.60x = 4,066,420,488.77
  5. Step 5: Solve for x
    x = 4,066,420,488.77/73,581.60
  6. Step 6: Final answer
    x = 55,264.09

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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.