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Finding the Fourth Proportional to 84,258.93, 116,079.54 and 58,718.87

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Solution

The fourth proportional to 84,258.93, 116,079.54 and 58,718.87 is: 80,894.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,258.93 : 116,079.54 = 58,718.87 : x
  2. Step 2: Convert to fraction form
    84,258.93/116,079.54 = 58,718.87/x
  3. Step 3: Cross multiply
    84,258.93x = 116,079.54 × 58,718.87
  4. Step 4: Simplify right side
    84,258.93x = 6,816,059,418.92
  5. Step 5: Solve for x
    x = 6,816,059,418.92/84,258.93
  6. Step 6: Final answer
    x = 80,894.21

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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.