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Finding the Fourth Proportional to 621,219.56, 855,167.37 and 459,770.36

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Solution

The fourth proportional to 621,219.56, 855,167.37 and 459,770.36 is: 632,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,219.56 : 855,167.37 = 459,770.36 : x
  2. Step 2: Convert to fraction form
    621,219.56/855,167.37 = 459,770.36/x
  3. Step 3: Cross multiply
    621,219.56x = 855,167.37 × 459,770.36
  4. Step 4: Simplify right side
    621,219.56x = 393,180,609,565.15
  5. Step 5: Solve for x
    x = 393,180,609,565.15/621,219.56
  6. Step 6: Final answer
    x = 632,917.30

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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.