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Finding the Fourth Proportional to 423,698.16, 584,561.15 and 239,911.70

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Solution

The fourth proportional to 423,698.16, 584,561.15 and 239,911.70 is: 330,997.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,698.16 : 584,561.15 = 239,911.70 : x
  2. Step 2: Convert to fraction form
    423,698.16/584,561.15 = 239,911.70/x
  3. Step 3: Cross multiply
    423,698.16x = 584,561.15 × 239,911.70
  4. Step 4: Simplify right side
    423,698.16x = 140,243,055,128.09
  5. Step 5: Solve for x
    x = 140,243,055,128.09/423,698.16
  6. Step 6: Final answer
    x = 330,997.56

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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.