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Finding the Fourth Proportional to 117,841.60, 176,762.40 and 104,939.20

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Solution

The fourth proportional to 117,841.60, 176,762.40 and 104,939.20 is: 157,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,841.60 : 176,762.40 = 104,939.20 : x
  2. Step 2: Convert to fraction form
    117,841.60/176,762.40 = 104,939.20/x
  3. Step 3: Cross multiply
    117,841.60x = 176,762.40 × 104,939.20
  4. Step 4: Simplify right side
    117,841.60x = 18,549,304,846.08
  5. Step 5: Solve for x
    x = 18,549,304,846.08/117,841.60
  6. Step 6: Final answer
    x = 157,408.80

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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.