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Finding the Fourth Proportional to 616,320.26, 850,633.54 and 398,796.74

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Solution

The fourth proportional to 616,320.26, 850,633.54 and 398,796.74 is: 550,411.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,320.26 : 850,633.54 = 398,796.74 : x
  2. Step 2: Convert to fraction form
    616,320.26/850,633.54 = 398,796.74/x
  3. Step 3: Cross multiply
    616,320.26x = 850,633.54 × 398,796.74
  4. Step 4: Simplify right side
    616,320.26x = 339,229,882,686.66
  5. Step 5: Solve for x
    x = 339,229,882,686.66/616,320.26
  6. Step 6: Final answer
    x = 550,411.70

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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.