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Finding the Fourth Proportional to 561,513.96, 774,889.56 and 306,865.11

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Solution

The fourth proportional to 561,513.96, 774,889.56 and 306,865.11 is: 423,474.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,513.96 : 774,889.56 = 306,865.11 : x
  2. Step 2: Convert to fraction form
    561,513.96/774,889.56 = 306,865.11/x
  3. Step 3: Cross multiply
    561,513.96x = 774,889.56 × 306,865.11
  4. Step 4: Simplify right side
    561,513.96x = 237,786,570,067.25
  5. Step 5: Solve for x
    x = 237,786,570,067.25/561,513.96
  6. Step 6: Final answer
    x = 423,474.01

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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.