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Finding the Fourth Proportional to 235,836.43, 353,810.00 and 78,064.88

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Solution

The fourth proportional to 235,836.43, 353,810.00 and 78,064.88 is: 117,115.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,836.43 : 353,810.00 = 78,064.88 : x
  2. Step 2: Convert to fraction form
    235,836.43/353,810.00 = 78,064.88/x
  3. Step 3: Cross multiply
    235,836.43x = 353,810.00 × 78,064.88
  4. Step 4: Simplify right side
    235,836.43x = 27,620,133,033.43
  5. Step 5: Solve for x
    x = 27,620,133,033.43/235,836.43
  6. Step 6: Final answer
    x = 117,115.64

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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.