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Finding the Fourth Proportional to 504,963.09, 696,849.08 and 278,608.59

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Solution

The fourth proportional to 504,963.09, 696,849.08 and 278,608.59 is: 384,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,963.09 : 696,849.08 = 278,608.59 : x
  2. Step 2: Convert to fraction form
    504,963.09/696,849.08 = 278,608.59/x
  3. Step 3: Cross multiply
    504,963.09x = 696,849.08 × 278,608.59
  4. Step 4: Simplify right side
    504,963.09x = 194,148,138,228.55
  5. Step 5: Solve for x
    x = 194,148,138,228.55/504,963.09
  6. Step 6: Final answer
    x = 384,479.86

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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.