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Finding the Fourth Proportional to 73,670.55, 110,505.78 and 21,080.01

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Solution

The fourth proportional to 73,670.55, 110,505.78 and 21,080.01 is: 31,620.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,670.55 : 110,505.78 = 21,080.01 : x
  2. Step 2: Convert to fraction form
    73,670.55/110,505.78 = 21,080.01/x
  3. Step 3: Cross multiply
    73,670.55x = 110,505.78 × 21,080.01
  4. Step 4: Simplify right side
    73,670.55x = 2,329,462,947.46
  5. Step 5: Solve for x
    x = 2,329,462,947.46/73,670.55
  6. Step 6: Final answer
    x = 31,620.00

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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.