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Finding the Fourth Proportional to 689,181.53, 950,997.71 and 383,208.55

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Solution

The fourth proportional to 689,181.53, 950,997.71 and 383,208.55 is: 528,787.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,181.53 : 950,997.71 = 383,208.55 : x
  2. Step 2: Convert to fraction form
    689,181.53/950,997.71 = 383,208.55/x
  3. Step 3: Cross multiply
    689,181.53x = 950,997.71 × 383,208.55
  4. Step 4: Simplify right side
    689,181.53x = 364,430,452,082.95
  5. Step 5: Solve for x
    x = 364,430,452,082.95/689,181.53
  6. Step 6: Final answer
    x = 528,787.32

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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.