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Finding the Fourth Proportional to 98,792.91, 136,355.00 and 90,822.51

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Solution

The fourth proportional to 98,792.91, 136,355.00 and 90,822.51 is: 125,354.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,792.91 : 136,355.00 = 90,822.51 : x
  2. Step 2: Convert to fraction form
    98,792.91/136,355.00 = 90,822.51/x
  3. Step 3: Cross multiply
    98,792.91x = 136,355.00 × 90,822.51
  4. Step 4: Simplify right side
    98,792.91x = 12,384,102,896.94
  5. Step 5: Solve for x
    x = 12,384,102,896.94/98,792.91
  6. Step 6: Final answer
    x = 125,354.17

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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.