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Finding the Fourth Proportional to 117,378.80, 175,767.60 and 64,729.88

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Solution

The fourth proportional to 117,378.80, 175,767.60 and 64,729.88 is: 96,929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,378.80 : 175,767.60 = 64,729.88 : x
  2. Step 2: Convert to fraction form
    117,378.80/175,767.60 = 64,729.88/x
  3. Step 3: Cross multiply
    117,378.80x = 175,767.60 × 64,729.88
  4. Step 4: Simplify right side
    117,378.80x = 11,377,415,655.89
  5. Step 5: Solve for x
    x = 11,377,415,655.89/117,378.80
  6. Step 6: Final answer
    x = 96,929.05

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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.