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Finding the Fourth Proportional to 505,217.44, 697,196.28 and 278,862.88

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Solution

The fourth proportional to 505,217.44, 697,196.28 and 278,862.88 is: 384,828.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,217.44 : 697,196.28 = 278,862.88 : x
  2. Step 2: Convert to fraction form
    505,217.44/697,196.28 = 278,862.88/x
  3. Step 3: Cross multiply
    505,217.44x = 697,196.28 × 278,862.88
  4. Step 4: Simplify right side
    505,217.44x = 194,422,162,566.09
  5. Step 5: Solve for x
    x = 194,422,162,566.09/505,217.44
  6. Step 6: Final answer
    x = 384,828.68

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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.