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Finding the Fourth Proportional to 621,220.06, 855,168.06 and 459,770.86

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Solution

The fourth proportional to 621,220.06, 855,168.06 and 459,770.86 is: 632,917.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,220.06 : 855,168.06 = 459,770.86 : x
  2. Step 2: Convert to fraction form
    621,220.06/855,168.06 = 459,770.86/x
  3. Step 3: Cross multiply
    621,220.06x = 855,168.06 × 459,770.86
  4. Step 4: Simplify right side
    621,220.06x = 393,181,354,390.73
  5. Step 5: Solve for x
    x = 393,181,354,390.73/621,220.06
  6. Step 6: Final answer
    x = 632,917.99

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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.