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Finding the Fourth Proportional to 289,331.06, 399,212.28 and 174,628.31

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Solution

The fourth proportional to 289,331.06, 399,212.28 and 174,628.31 is: 240,948.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,331.06 : 399,212.28 = 174,628.31 : x
  2. Step 2: Convert to fraction form
    289,331.06/399,212.28 = 174,628.31/x
  3. Step 3: Cross multiply
    289,331.06x = 399,212.28 × 174,628.31
  4. Step 4: Simplify right side
    289,331.06x = 69,713,763,791.59
  5. Step 5: Solve for x
    x = 69,713,763,791.59/289,331.06
  6. Step 6: Final answer
    x = 240,948.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.