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Finding the Fourth Proportional to 504,456.38, 696,155.20 and 278,109.98

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Solution

The fourth proportional to 504,456.38, 696,155.20 and 278,109.98 is: 383,794.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,456.38 : 696,155.20 = 278,109.98 : x
  2. Step 2: Convert to fraction form
    504,456.38/696,155.20 = 278,109.98/x
  3. Step 3: Cross multiply
    504,456.38x = 696,155.20 × 278,109.98
  4. Step 4: Simplify right side
    504,456.38x = 193,607,708,748.90
  5. Step 5: Solve for x
    x = 193,607,708,748.90/504,456.38
  6. Step 6: Final answer
    x = 383,794.75

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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.