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Finding the Fourth Proportional to 117,817.60, 176,726.40 and 104,915.20

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Solution

The fourth proportional to 117,817.60, 176,726.40 and 104,915.20 is: 157,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,817.60 : 176,726.40 = 104,915.20 : x
  2. Step 2: Convert to fraction form
    117,817.60/176,726.40 = 104,915.20/x
  3. Step 3: Cross multiply
    117,817.60x = 176,726.40 × 104,915.20
  4. Step 4: Simplify right side
    117,817.60x = 18,541,285,601.28
  5. Step 5: Solve for x
    x = 18,541,285,601.28/117,817.60
  6. Step 6: Final answer
    x = 157,372.80

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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.