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Finding the Fourth Proportional to 401,235.92, 553,701.96 and 219,958.16

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Solution

The fourth proportional to 401,235.92, 553,701.96 and 219,958.16 is: 303,540.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,235.92 : 553,701.96 = 219,958.16 : x
  2. Step 2: Convert to fraction form
    401,235.92/553,701.96 = 219,958.16/x
  3. Step 3: Cross multiply
    401,235.92x = 553,701.96 × 219,958.16
  4. Step 4: Simplify right side
    401,235.92x = 121,791,264,309.99
  5. Step 5: Solve for x
    x = 121,791,264,309.99/401,235.92
  6. Step 6: Final answer
    x = 303,540.28

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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.