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Finding the Fourth Proportional to 691,996.08, 954,954.72 and 390,190.08

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Solution

The fourth proportional to 691,996.08, 954,954.72 and 390,190.08 is: 538,462.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,996.08 : 954,954.72 = 390,190.08 : x
  2. Step 2: Convert to fraction form
    691,996.08/954,954.72 = 390,190.08/x
  3. Step 3: Cross multiply
    691,996.08x = 954,954.72 × 390,190.08
  4. Step 4: Simplify right side
    691,996.08x = 372,613,858,593.18
  5. Step 5: Solve for x
    x = 372,613,858,593.18/691,996.08
  6. Step 6: Final answer
    x = 538,462.38

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Similar ratio
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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.