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Finding the Fourth Proportional to 194,429.70, 291,644.55 and 115,503.30

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Solution

The fourth proportional to 194,429.70, 291,644.55 and 115,503.30 is: 173,254.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,429.70 : 291,644.55 = 115,503.30 : x
  2. Step 2: Convert to fraction form
    194,429.70/291,644.55 = 115,503.30/x
  3. Step 3: Cross multiply
    194,429.70x = 291,644.55 × 115,503.30
  4. Step 4: Simplify right side
    194,429.70x = 33,685,907,952.02
  5. Step 5: Solve for x
    x = 33,685,907,952.02/194,429.70
  6. Step 6: Final answer
    x = 173,254.95

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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.