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Finding the Fourth Proportional to 98,787.93, 136,318.71 and 58,494.48

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Solution

The fourth proportional to 98,787.93, 136,318.71 and 58,494.48 is: 80,717.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,787.93 : 136,318.71 = 58,494.48 : x
  2. Step 2: Convert to fraction form
    98,787.93/136,318.71 = 58,494.48/x
  3. Step 3: Cross multiply
    98,787.93x = 136,318.71 × 58,494.48
  4. Step 4: Simplify right side
    98,787.93x = 7,973,892,055.72
  5. Step 5: Solve for x
    x = 7,973,892,055.72/98,787.93
  6. Step 6: Final answer
    x = 80,717.27

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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.