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Finding the Fourth Proportional to 71,928.51, 99,269.70 and 41,714.76

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Solution

The fourth proportional to 71,928.51, 99,269.70 and 41,714.76 is: 57,571.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,928.51 : 99,269.70 = 41,714.76 : x
  2. Step 2: Convert to fraction form
    71,928.51/99,269.70 = 41,714.76/x
  3. Step 3: Cross multiply
    71,928.51x = 99,269.70 × 41,714.76
  4. Step 4: Simplify right side
    71,928.51x = 4,141,011,710.77
  5. Step 5: Solve for x
    x = 4,141,011,710.77/71,928.51
  6. Step 6: Final answer
    x = 57,571.21

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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.