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Finding the Fourth Proportional to 622,782.12, 930,760.47 and 454,656.49

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Solution

The fourth proportional to 622,782.12, 930,760.47 and 454,656.49 is: 679,493.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,782.12 : 930,760.47 = 454,656.49 : x
  2. Step 2: Convert to fraction form
    622,782.12/930,760.47 = 454,656.49/x
  3. Step 3: Cross multiply
    622,782.12x = 930,760.47 × 454,656.49
  4. Step 4: Simplify right side
    622,782.12x = 423,176,291,229.58
  5. Step 5: Solve for x
    x = 423,176,291,229.58/622,782.12
  6. Step 6: Final answer
    x = 679,493.32

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Double scale
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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.