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Finding the Fourth Proportional to 620,767.28, 930,776.70 and 404,786.45

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Solution

The fourth proportional to 620,767.28, 930,776.70 and 404,786.45 is: 606,935.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,767.28 : 930,776.70 = 404,786.45 : x
  2. Step 2: Convert to fraction form
    620,767.28/930,776.70 = 404,786.45/x
  3. Step 3: Cross multiply
    620,767.28x = 930,776.70 × 404,786.45
  4. Step 4: Simplify right side
    620,767.28x = 376,765,796,135.72
  5. Step 5: Solve for x
    x = 376,765,796,135.72/620,767.28
  6. Step 6: Final answer
    x = 606,935.66

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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.