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Finding the Fourth Proportional to 70,080.84, 104,994.90 and 38,456.82

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Solution

The fourth proportional to 70,080.84, 104,994.90 and 38,456.82 is: 57,615.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,080.84 : 104,994.90 = 38,456.82 : x
  2. Step 2: Convert to fraction form
    70,080.84/104,994.90 = 38,456.82/x
  3. Step 3: Cross multiply
    70,080.84x = 104,994.90 × 38,456.82
  4. Step 4: Simplify right side
    70,080.84x = 4,037,769,970.22
  5. Step 5: Solve for x
    x = 4,037,769,970.22/70,080.84
  6. Step 6: Final answer
    x = 57,615.89

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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.