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Finding the Fourth Proportional to 483,654.25, 725,480.51 and 128,668.26

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Solution

The fourth proportional to 483,654.25, 725,480.51 and 128,668.26 is: 193,002.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,654.25 : 725,480.51 = 128,668.26 : x
  2. Step 2: Convert to fraction form
    483,654.25/725,480.51 = 128,668.26/x
  3. Step 3: Cross multiply
    483,654.25x = 725,480.51 × 128,668.26
  4. Step 4: Simplify right side
    483,654.25x = 93,346,316,962.82
  5. Step 5: Solve for x
    x = 93,346,316,962.82/483,654.25
  6. Step 6: Final answer
    x = 193,002.16

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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.