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Finding the Fourth Proportional to 117,897.60, 176,846.40 and 104,995.20

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Solution

The fourth proportional to 117,897.60, 176,846.40 and 104,995.20 is: 157,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,897.60 : 176,846.40 = 104,995.20 : x
  2. Step 2: Convert to fraction form
    117,897.60/176,846.40 = 104,995.20/x
  3. Step 3: Cross multiply
    117,897.60x = 176,846.40 × 104,995.20
  4. Step 4: Simplify right side
    117,897.60x = 18,568,023,137.28
  5. Step 5: Solve for x
    x = 18,568,023,137.28/117,897.60
  6. Step 6: Final answer
    x = 157,492.80

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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.