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Finding the Fourth Proportional to 298,553.39, 448,014.64 and 121,061.94

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Solution

The fourth proportional to 298,553.39, 448,014.64 and 121,061.94 is: 181,667.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,553.39 : 448,014.64 = 121,061.94 : x
  2. Step 2: Convert to fraction form
    298,553.39/448,014.64 = 121,061.94/x
  3. Step 3: Cross multiply
    298,553.39x = 448,014.64 × 121,061.94
  4. Step 4: Simplify right side
    298,553.39x = 54,237,521,466.80
  5. Step 5: Solve for x
    x = 54,237,521,466.80/298,553.39
  6. Step 6: Final answer
    x = 181,667.75

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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.