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Finding the Fourth Proportional to 372,916.52, 559,862.60 and 221,390.22

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Solution

The fourth proportional to 372,916.52, 559,862.60 and 221,390.22 is: 332,374.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,916.52 : 559,862.60 = 221,390.22 : x
  2. Step 2: Convert to fraction form
    372,916.52/559,862.60 = 221,390.22/x
  3. Step 3: Cross multiply
    372,916.52x = 559,862.60 × 221,390.22
  4. Step 4: Simplify right side
    372,916.52x = 123,948,103,076.82
  5. Step 5: Solve for x
    x = 123,948,103,076.82/372,916.52
  6. Step 6: Final answer
    x = 332,374.94

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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.