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Finding the Fourth Proportional to 605,616.30, 907,440.30 and 520,979.40

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Solution

The fourth proportional to 605,616.30, 907,440.30 and 520,979.40 is: 780,622.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,616.30 : 907,440.30 = 520,979.40 : x
  2. Step 2: Convert to fraction form
    605,616.30/907,440.30 = 520,979.40/x
  3. Step 3: Cross multiply
    605,616.30x = 907,440.30 × 520,979.40
  4. Step 4: Simplify right side
    605,616.30x = 472,757,703,029.82
  5. Step 5: Solve for x
    x = 472,757,703,029.82/605,616.30
  6. Step 6: Final answer
    x = 780,622.49

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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.