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Finding the Fourth Proportional to 128,564.43, 192,971.01 and 62,051.37

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Solution

The fourth proportional to 128,564.43, 192,971.01 and 62,051.37 is: 93,137.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,564.43 : 192,971.01 = 62,051.37 : x
  2. Step 2: Convert to fraction form
    128,564.43/192,971.01 = 62,051.37/x
  3. Step 3: Cross multiply
    128,564.43x = 192,971.01 × 62,051.37
  4. Step 4: Simplify right side
    128,564.43x = 11,974,115,540.78
  5. Step 5: Solve for x
    x = 11,974,115,540.78/128,564.43
  6. Step 6: Final answer
    x = 93,137.08

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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.