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Finding the Fourth Proportional to 638,193.12, 880,551.82 and 362,489.64

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Solution

The fourth proportional to 638,193.12, 880,551.82 and 362,489.64 is: 500,147.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,193.12 : 880,551.82 = 362,489.64 : x
  2. Step 2: Convert to fraction form
    638,193.12/880,551.82 = 362,489.64/x
  3. Step 3: Cross multiply
    638,193.12x = 880,551.82 × 362,489.64
  4. Step 4: Simplify right side
    638,193.12x = 319,190,912,233.15
  5. Step 5: Solve for x
    x = 319,190,912,233.15/638,193.12
  6. Step 6: Final answer
    x = 500,147.84

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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.