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Finding the Fourth Proportional to 164,964.81, 247,397.82 and 86,035.98

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Solution

The fourth proportional to 164,964.81, 247,397.82 and 86,035.98 is: 129,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,964.81 : 247,397.82 = 86,035.98 : x
  2. Step 2: Convert to fraction form
    164,964.81/247,397.82 = 86,035.98/x
  3. Step 3: Cross multiply
    164,964.81x = 247,397.82 × 86,035.98
  4. Step 4: Simplify right side
    164,964.81x = 21,285,113,893.56
  5. Step 5: Solve for x
    x = 21,285,113,893.56/164,964.81
  6. Step 6: Final answer
    x = 129,028.21

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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.