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Finding the Fourth Proportional to 106,648.80, 147,174.48 and 58,905.42

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Solution

The fourth proportional to 106,648.80, 147,174.48 and 58,905.42 is: 81,289.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,648.80 : 147,174.48 = 58,905.42 : x
  2. Step 2: Convert to fraction form
    106,648.80/147,174.48 = 58,905.42/x
  3. Step 3: Cross multiply
    106,648.80x = 147,174.48 × 58,905.42
  4. Step 4: Simplify right side
    106,648.80x = 8,669,374,557.68
  5. Step 5: Solve for x
    x = 8,669,374,557.68/106,648.80
  6. Step 6: Final answer
    x = 81,289.00

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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.