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Finding the Fourth Proportional to 117,029.20, 175,246.80 and 64,379.20

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Solution

The fourth proportional to 117,029.20, 175,246.80 and 64,379.20 is: 96,405.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,029.20 : 175,246.80 = 64,379.20 : x
  2. Step 2: Convert to fraction form
    117,029.20/175,246.80 = 64,379.20/x
  3. Step 3: Cross multiply
    117,029.20x = 175,246.80 × 64,379.20
  4. Step 4: Simplify right side
    117,029.20x = 11,282,248,786.56
  5. Step 5: Solve for x
    x = 11,282,248,786.56/117,029.20
  6. Step 6: Final answer
    x = 96,405.42

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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.