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Finding the Fourth Proportional to 504,979.52, 696,886.32 and 278,639.60

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Solution

The fourth proportional to 504,979.52, 696,886.32 and 278,639.60 is: 384,530.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,979.52 : 696,886.32 = 278,639.60 : x
  2. Step 2: Convert to fraction form
    504,979.52/696,886.32 = 278,639.60/x
  3. Step 3: Cross multiply
    504,979.52x = 696,886.32 × 278,639.60
  4. Step 4: Simplify right side
    504,979.52x = 194,180,125,450.27
  5. Step 5: Solve for x
    x = 194,180,125,450.27/504,979.52
  6. Step 6: Final answer
    x = 384,530.69

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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.