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Finding the Fourth Proportional to 81,559.17, 112,551.84 and 47,591.01

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Solution

The fourth proportional to 81,559.17, 112,551.84 and 47,591.01 is: 65,675.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,559.17 : 112,551.84 = 47,591.01 : x
  2. Step 2: Convert to fraction form
    81,559.17/112,551.84 = 47,591.01/x
  3. Step 3: Cross multiply
    81,559.17x = 112,551.84 × 47,591.01
  4. Step 4: Simplify right side
    81,559.17x = 5,356,455,742.96
  5. Step 5: Solve for x
    x = 5,356,455,742.96/81,559.17
  6. Step 6: Final answer
    x = 65,675.70

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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.