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Finding the Fourth Proportional to 98,994.05, 136,611.34 and 53,671.89

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Solution

The fourth proportional to 98,994.05, 136,611.34 and 53,671.89 is: 74,066.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,994.05 : 136,611.34 = 53,671.89 : x
  2. Step 2: Convert to fraction form
    98,994.05/136,611.34 = 53,671.89/x
  3. Step 3: Cross multiply
    98,994.05x = 136,611.34 × 53,671.89
  4. Step 4: Simplify right side
    98,994.05x = 7,332,188,813.23
  5. Step 5: Solve for x
    x = 7,332,188,813.23/98,994.05
  6. Step 6: Final answer
    x = 74,066.96

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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.