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Finding the Fourth Proportional to 70,826.88, 97,740.72 and 38,994.96

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Solution

The fourth proportional to 70,826.88, 97,740.72 and 38,994.96 is: 53,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,826.88 : 97,740.72 = 38,994.96 : x
  2. Step 2: Convert to fraction form
    70,826.88/97,740.72 = 38,994.96/x
  3. Step 3: Cross multiply
    70,826.88x = 97,740.72 × 38,994.96
  4. Step 4: Simplify right side
    70,826.88x = 3,811,395,466.77
  5. Step 5: Solve for x
    x = 3,811,395,466.77/70,826.88
  6. Step 6: Final answer
    x = 53,812.84

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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.