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Finding the Fourth Proportional to 638,612.28, 881,189.01 and 366,692.04

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Solution

The fourth proportional to 638,612.28, 881,189.01 and 366,692.04 is: 505,979.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,612.28 : 881,189.01 = 366,692.04 : x
  2. Step 2: Convert to fraction form
    638,612.28/881,189.01 = 366,692.04/x
  3. Step 3: Cross multiply
    638,612.28x = 881,189.01 × 366,692.04
  4. Step 4: Simplify right side
    638,612.28x = 323,124,995,702.48
  5. Step 5: Solve for x
    x = 323,124,995,702.48/638,612.28
  6. Step 6: Final answer
    x = 505,979.93

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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.