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Finding the Fourth Proportional to 505,751.64, 697,877.76 and 279,383.64

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Solution

The fourth proportional to 505,751.64, 697,877.76 and 279,383.64 is: 385,516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,751.64 : 697,877.76 = 279,383.64 : x
  2. Step 2: Convert to fraction form
    505,751.64/697,877.76 = 279,383.64/x
  3. Step 3: Cross multiply
    505,751.64x = 697,877.76 × 279,383.64
  4. Step 4: Simplify right side
    505,751.64x = 194,975,628,863.85
  5. Step 5: Solve for x
    x = 194,975,628,863.85/505,751.64
  6. Step 6: Final answer
    x = 385,516.55

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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.