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Finding the Fourth Proportional to 638,551.98, 881,238.96 and 366,620.40

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Solution

The fourth proportional to 638,551.98, 881,238.96 and 366,620.40 is: 505,957.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,551.98 : 881,238.96 = 366,620.40 : x
  2. Step 2: Convert to fraction form
    638,551.98/881,238.96 = 366,620.40/x
  3. Step 3: Cross multiply
    638,551.98x = 881,238.96 × 366,620.40
  4. Step 4: Simplify right side
    638,551.98x = 323,080,180,010.78
  5. Step 5: Solve for x
    x = 323,080,180,010.78/638,551.98
  6. Step 6: Final answer
    x = 505,957.53

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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.