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Finding the Fourth Proportional to 621,222.06, 855,170.82 and 459,772.86

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Solution

The fourth proportional to 621,222.06, 855,170.82 and 459,772.86 is: 632,920.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,222.06 : 855,170.82 = 459,772.86 : x
  2. Step 2: Convert to fraction form
    621,222.06/855,170.82 = 459,772.86/x
  3. Step 3: Cross multiply
    621,222.06x = 855,170.82 × 459,772.86
  4. Step 4: Simplify right side
    621,222.06x = 393,184,333,699.95
  5. Step 5: Solve for x
    x = 393,184,333,699.95/621,222.06
  6. Step 6: Final answer
    x = 632,920.75

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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.