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Finding the Fourth Proportional to 84,915.71, 116,981.15 and 59,374.28

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Solution

The fourth proportional to 84,915.71, 116,981.15 and 59,374.28 is: 81,794.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,915.71 : 116,981.15 = 59,374.28 : x
  2. Step 2: Convert to fraction form
    84,915.71/116,981.15 = 59,374.28/x
  3. Step 3: Cross multiply
    84,915.71x = 116,981.15 × 59,374.28
  4. Step 4: Simplify right side
    84,915.71x = 6,945,671,550.40
  5. Step 5: Solve for x
    x = 6,945,671,550.40/84,915.71
  6. Step 6: Final answer
    x = 81,794.90

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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.