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Finding the Fourth Proportional to 621,801.70, 932,648.96 and 378,579.74

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Solution

The fourth proportional to 621,801.70, 932,648.96 and 378,579.74 is: 567,836.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,801.70 : 932,648.96 = 378,579.74 : x
  2. Step 2: Convert to fraction form
    621,801.70/932,648.96 = 378,579.74/x
  3. Step 3: Cross multiply
    621,801.70x = 932,648.96 × 378,579.74
  4. Step 4: Simplify right side
    621,801.70x = 353,082,000,568.71
  5. Step 5: Solve for x
    x = 353,082,000,568.71/621,801.70
  6. Step 6: Final answer
    x = 567,836.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.