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Finding the Fourth Proportional to 321,638.51, 482,301.77 and 96,957.06

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Solution

The fourth proportional to 321,638.51, 482,301.77 and 96,957.06 is: 145,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,638.51 : 482,301.77 = 96,957.06 : x
  2. Step 2: Convert to fraction form
    321,638.51/482,301.77 = 96,957.06/x
  3. Step 3: Cross multiply
    321,638.51x = 482,301.77 × 96,957.06
  4. Step 4: Simplify right side
    321,638.51x = 46,762,561,167.21
  5. Step 5: Solve for x
    x = 46,762,561,167.21/321,638.51
  6. Step 6: Final answer
    x = 145,388.57

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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.