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Finding the Fourth Proportional to 613,218.59, 919,828.14 and 275,865.20

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Solution

The fourth proportional to 613,218.59, 919,828.14 and 275,865.20 is: 413,797.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,218.59 : 919,828.14 = 275,865.20 : x
  2. Step 2: Convert to fraction form
    613,218.59/919,828.14 = 275,865.20/x
  3. Step 3: Cross multiply
    613,218.59x = 919,828.14 × 275,865.20
  4. Step 4: Simplify right side
    613,218.59x = 253,748,573,806.73
  5. Step 5: Solve for x
    x = 253,748,573,806.73/613,218.59
  6. Step 6: Final answer
    x = 413,797.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.