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Finding the Fourth Proportional to 406,395.54, 609,636.51 and 125,934.66

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Solution

The fourth proportional to 406,395.54, 609,636.51 and 125,934.66 is: 188,915.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,395.54 : 609,636.51 = 125,934.66 : x
  2. Step 2: Convert to fraction form
    406,395.54/609,636.51 = 125,934.66/x
  3. Step 3: Cross multiply
    406,395.54x = 609,636.51 × 125,934.66
  4. Step 4: Simplify right side
    406,395.54x = 76,774,366,610.44
  5. Step 5: Solve for x
    x = 76,774,366,610.44/406,395.54
  6. Step 6: Final answer
    x = 188,915.38

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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.