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Finding the Fourth Proportional to 807,866.45, 1,114,863.12 and 445,304.21

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Solution

The fourth proportional to 807,866.45, 1,114,863.12 and 445,304.21 is: 614,523.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,866.45 : 1,114,863.12 = 445,304.21 : x
  2. Step 2: Convert to fraction form
    807,866.45/1,114,863.12 = 445,304.21/x
  3. Step 3: Cross multiply
    807,866.45x = 1,114,863.12 × 445,304.21
  4. Step 4: Simplify right side
    807,866.45x = 496,453,243,696.89
  5. Step 5: Solve for x
    x = 496,453,243,696.89/807,866.45
  6. Step 6: Final answer
    x = 614,523.91

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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.