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Finding the Fourth Proportional to 505,217.76, 697,200.56 and 278,863.32

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Solution

The fourth proportional to 505,217.76, 697,200.56 and 278,863.32 is: 384,831.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,217.76 : 697,200.56 = 278,863.32 : x
  2. Step 2: Convert to fraction form
    505,217.76/697,200.56 = 278,863.32/x
  3. Step 3: Cross multiply
    505,217.76x = 697,200.56 × 278,863.32
  4. Step 4: Simplify right side
    505,217.76x = 194,423,662,867.46
  5. Step 5: Solve for x
    x = 194,423,662,867.46/505,217.76
  6. Step 6: Final answer
    x = 384,831.41

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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.