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Finding the Fourth Proportional to 667,617.78, 996,570.26 and 618,279.06

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Solution

The fourth proportional to 667,617.78, 996,570.26 and 618,279.06 is: 922,921.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,617.78 : 996,570.26 = 618,279.06 : x
  2. Step 2: Convert to fraction form
    667,617.78/996,570.26 = 618,279.06/x
  3. Step 3: Cross multiply
    667,617.78x = 996,570.26 × 618,279.06
  4. Step 4: Simplify right side
    667,617.78x = 616,158,525,122.45
  5. Step 5: Solve for x
    x = 616,158,525,122.45/667,617.78
  6. Step 6: Final answer
    x = 922,921.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.