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Finding the Fourth Proportional to 672,616.79, 927,686.29 and 430,921.85

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Solution

The fourth proportional to 672,616.79, 927,686.29 and 430,921.85 is: 594,335.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,616.79 : 927,686.29 = 430,921.85 : x
  2. Step 2: Convert to fraction form
    672,616.79/927,686.29 = 430,921.85/x
  3. Step 3: Cross multiply
    672,616.79x = 927,686.29 × 430,921.85
  4. Step 4: Simplify right side
    672,616.79x = 399,760,289,138.09
  5. Step 5: Solve for x
    x = 399,760,289,138.09/672,616.79
  6. Step 6: Final answer
    x = 594,335.88

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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.