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Finding the Fourth Proportional to 128,559.29, 192,963.32 and 62,046.25

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Solution

The fourth proportional to 128,559.29, 192,963.32 and 62,046.25 is: 93,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,559.29 : 192,963.32 = 62,046.25 : x
  2. Step 2: Convert to fraction form
    128,559.29/192,963.32 = 62,046.25/x
  3. Step 3: Cross multiply
    128,559.29x = 192,963.32 × 62,046.25
  4. Step 4: Simplify right side
    128,559.29x = 11,972,650,066.26
  5. Step 5: Solve for x
    x = 11,972,650,066.26/128,559.29
  6. Step 6: Final answer
    x = 93,129.40

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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.