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Finding the Fourth Proportional to 325,721.48, 488,647.52 and 112,497.21

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Solution

The fourth proportional to 325,721.48, 488,647.52 and 112,497.21 is: 168,768.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,721.48 : 488,647.52 = 112,497.21 : x
  2. Step 2: Convert to fraction form
    325,721.48/488,647.52 = 112,497.21/x
  3. Step 3: Cross multiply
    325,721.48x = 488,647.52 × 112,497.21
  4. Step 4: Simplify right side
    325,721.48x = 54,971,480,278.51
  5. Step 5: Solve for x
    x = 54,971,480,278.51/325,721.48
  6. Step 6: Final answer
    x = 168,768.36

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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.