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Finding the Fourth Proportional to 504,830.06, 696,611.65 and 278,475.54

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Solution

The fourth proportional to 504,830.06, 696,611.65 and 278,475.54 is: 384,266.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,830.06 : 696,611.65 = 278,475.54 : x
  2. Step 2: Convert to fraction form
    504,830.06/696,611.65 = 278,475.54/x
  3. Step 3: Cross multiply
    504,830.06x = 696,611.65 × 278,475.54
  4. Step 4: Simplify right side
    504,830.06x = 193,989,305,404.04
  5. Step 5: Solve for x
    x = 193,989,305,404.04/504,830.06
  6. Step 6: Final answer
    x = 384,266.55

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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.