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Finding the Fourth Proportional to 483,670.26, 725,504.46 and 128,684.28

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Solution

The fourth proportional to 483,670.26, 725,504.46 and 128,684.28 is: 193,026.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,670.26 : 725,504.46 = 128,684.28 : x
  2. Step 2: Convert to fraction form
    483,670.26/725,504.46 = 128,684.28/x
  3. Step 3: Cross multiply
    483,670.26x = 725,504.46 × 128,684.28
  4. Step 4: Simplify right side
    483,670.26x = 93,361,019,071.89
  5. Step 5: Solve for x
    x = 93,361,019,071.89/483,670.26
  6. Step 6: Final answer
    x = 193,026.17

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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.