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Finding the Fourth Proportional to 375,940.80, 563,909.85 and 91,628.10

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Solution

The fourth proportional to 375,940.80, 563,909.85 and 91,628.10 is: 137,441.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,940.80 : 563,909.85 = 91,628.10 : x
  2. Step 2: Convert to fraction form
    375,940.80/563,909.85 = 91,628.10/x
  3. Step 3: Cross multiply
    375,940.80x = 563,909.85 × 91,628.10
  4. Step 4: Simplify right side
    375,940.80x = 51,669,988,126.79
  5. Step 5: Solve for x
    x = 51,669,988,126.79/375,940.80
  6. Step 6: Final answer
    x = 137,441.82

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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.