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Finding the Fourth Proportional to 505,159.92, 697,121.64 and 278,805.24

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Solution

The fourth proportional to 505,159.92, 697,121.64 and 278,805.24 is: 384,751.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,159.92 : 697,121.64 = 278,805.24 : x
  2. Step 2: Convert to fraction form
    505,159.92/697,121.64 = 278,805.24/x
  3. Step 3: Cross multiply
    505,159.92x = 697,121.64 × 278,805.24
  4. Step 4: Simplify right side
    505,159.92x = 194,361,166,149.39
  5. Step 5: Solve for x
    x = 194,361,166,149.39/505,159.92
  6. Step 6: Final answer
    x = 384,751.76

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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.