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Finding the Fourth Proportional to 561,217.78, 774,497.57 and 306,585.37

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Solution

The fourth proportional to 561,217.78, 774,497.57 and 306,585.37 is: 423,097.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,217.78 : 774,497.57 = 306,585.37 : x
  2. Step 2: Convert to fraction form
    561,217.78/774,497.57 = 306,585.37/x
  3. Step 3: Cross multiply
    561,217.78x = 774,497.57 × 306,585.37
  4. Step 4: Simplify right side
    561,217.78x = 237,449,623,497.75
  5. Step 5: Solve for x
    x = 237,449,623,497.75/561,217.78
  6. Step 6: Final answer
    x = 423,097.11

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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.