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Finding the Fourth Proportional to 689,203.89, 951,101.91 and 383,273.60

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Solution

The fourth proportional to 689,203.89, 951,101.91 and 383,273.60 is: 528,917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,203.89 : 951,101.91 = 383,273.60 : x
  2. Step 2: Convert to fraction form
    689,203.89/951,101.91 = 383,273.60/x
  3. Step 3: Cross multiply
    689,203.89x = 951,101.91 × 383,273.60
  4. Step 4: Simplify right side
    689,203.89x = 364,532,248,257.07
  5. Step 5: Solve for x
    x = 364,532,248,257.07/689,203.89
  6. Step 6: Final answer
    x = 528,917.86

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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.