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Finding the Fourth Proportional to 423,431.75, 584,314.38 and 251,357.07

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Solution

The fourth proportional to 423,431.75, 584,314.38 and 251,357.07 is: 346,860.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,431.75 : 584,314.38 = 251,357.07 : x
  2. Step 2: Convert to fraction form
    423,431.75/584,314.38 = 251,357.07/x
  3. Step 3: Cross multiply
    423,431.75x = 584,314.38 × 251,357.07
  4. Step 4: Simplify right side
    423,431.75x = 146,871,550,515.67
  5. Step 5: Solve for x
    x = 146,871,550,515.67/423,431.75
  6. Step 6: Final answer
    x = 346,860.04

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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.