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Finding the Fourth Proportional to 505,757.72, 697,917.66 and 290,901.40

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Solution

The fourth proportional to 505,757.72, 697,917.66 and 290,901.40 is: 401,427.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,757.72 : 697,917.66 = 290,901.40 : x
  2. Step 2: Convert to fraction form
    505,757.72/697,917.66 = 290,901.40/x
  3. Step 3: Cross multiply
    505,757.72x = 697,917.66 × 290,901.40
  4. Step 4: Simplify right side
    505,757.72x = 203,025,224,378.72
  5. Step 5: Solve for x
    x = 203,025,224,378.72/505,757.72
  6. Step 6: Final answer
    x = 401,427.83

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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.