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Finding the Fourth Proportional to 290,365.18, 400,747.35 and 177,253.54

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Solution

The fourth proportional to 290,365.18, 400,747.35 and 177,253.54 is: 244,636.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,365.18 : 400,747.35 = 177,253.54 : x
  2. Step 2: Convert to fraction form
    290,365.18/400,747.35 = 177,253.54/x
  3. Step 3: Cross multiply
    290,365.18x = 400,747.35 × 177,253.54
  4. Step 4: Simplify right side
    290,365.18x = 71,033,886,433.12
  5. Step 5: Solve for x
    x = 71,033,886,433.12/290,365.18
  6. Step 6: Final answer
    x = 244,636.38

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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.