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Finding the Fourth Proportional to 424,884.48, 637,347.89 and 121,323.66

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Solution

The fourth proportional to 424,884.48, 637,347.89 and 121,323.66 is: 181,991.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,884.48 : 637,347.89 = 121,323.66 : x
  2. Step 2: Convert to fraction form
    424,884.48/637,347.89 = 121,323.66/x
  3. Step 3: Cross multiply
    424,884.48x = 637,347.89 × 121,323.66
  4. Step 4: Simplify right side
    424,884.48x = 77,325,378,708.08
  5. Step 5: Solve for x
    x = 77,325,378,708.08/424,884.48
  6. Step 6: Final answer
    x = 181,991.53

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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.