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Finding the Fourth Proportional to 423,545.52, 635,343.12 and 119,914.32

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Solution

The fourth proportional to 423,545.52, 635,343.12 and 119,914.32 is: 179,878.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,545.52 : 635,343.12 = 119,914.32 : x
  2. Step 2: Convert to fraction form
    423,545.52/635,343.12 = 119,914.32/x
  3. Step 3: Cross multiply
    423,545.52x = 635,343.12 × 119,914.32
  4. Step 4: Simplify right side
    423,545.52x = 76,186,738,201.48
  5. Step 5: Solve for x
    x = 76,186,738,201.48/423,545.52
  6. Step 6: Final answer
    x = 179,878.51

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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.