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Finding the Fourth Proportional to 515,186.74, 772,850.42 and 178,136.89

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Solution

The fourth proportional to 515,186.74, 772,850.42 and 178,136.89 is: 267,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,186.74 : 772,850.42 = 178,136.89 : x
  2. Step 2: Convert to fraction form
    515,186.74/772,850.42 = 178,136.89/x
  3. Step 3: Cross multiply
    515,186.74x = 772,850.42 × 178,136.89
  4. Step 4: Simplify right side
    515,186.74x = 137,673,173,448.50
  5. Step 5: Solve for x
    x = 137,673,173,448.50/515,186.74
  6. Step 6: Final answer
    x = 267,229.65

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1.5x scale

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.