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Finding the Fourth Proportional to 689,774.57, 951,874.80 and 431,793.77

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Solution

The fourth proportional to 689,774.57, 951,874.80 and 431,793.77 is: 595,866.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,774.57 : 951,874.80 = 431,793.77 : x
  2. Step 2: Convert to fraction form
    689,774.57/951,874.80 = 431,793.77/x
  3. Step 3: Cross multiply
    689,774.57x = 951,874.80 × 431,793.77
  4. Step 4: Simplify right side
    689,774.57x = 411,013,608,460.00
  5. Step 5: Solve for x
    x = 411,013,608,460.00/689,774.57
  6. Step 6: Final answer
    x = 595,866.57

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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.