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Finding the Fourth Proportional to 375,419.91, 563,012.11 and 122,642.80

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Solution

The fourth proportional to 375,419.91, 563,012.11 and 122,642.80 is: 183,925.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,419.91 : 563,012.11 = 122,642.80 : x
  2. Step 2: Convert to fraction form
    375,419.91/563,012.11 = 122,642.80/x
  3. Step 3: Cross multiply
    375,419.91x = 563,012.11 × 122,642.80
  4. Step 4: Simplify right side
    375,419.91x = 69,049,381,604.31
  5. Step 5: Solve for x
    x = 69,049,381,604.31/375,419.91
  6. Step 6: Final answer
    x = 183,925.73

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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.