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Finding the Fourth Proportional to 551,965.69, 827,948.54 and 172,889.64

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Solution

The fourth proportional to 551,965.69, 827,948.54 and 172,889.64 is: 259,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,965.69 : 827,948.54 = 172,889.64 : x
  2. Step 2: Convert to fraction form
    551,965.69/827,948.54 = 172,889.64/x
  3. Step 3: Cross multiply
    551,965.69x = 827,948.54 × 172,889.64
  4. Step 4: Simplify right side
    551,965.69x = 143,143,724,478.85
  5. Step 5: Solve for x
    x = 143,143,724,478.85/551,965.69
  6. Step 6: Final answer
    x = 259,334.46

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Similar ratio
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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.