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Finding the Fourth Proportional to 628,007.89, 866,642.70 and 341,521.81

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Solution

The fourth proportional to 628,007.89, 866,642.70 and 341,521.81 is: 471,295.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,007.89 : 866,642.70 = 341,521.81 : x
  2. Step 2: Convert to fraction form
    628,007.89/866,642.70 = 341,521.81/x
  3. Step 3: Cross multiply
    628,007.89x = 866,642.70 × 341,521.81
  4. Step 4: Simplify right side
    628,007.89x = 295,977,383,527.29
  5. Step 5: Solve for x
    x = 295,977,383,527.29/628,007.89
  6. Step 6: Final answer
    x = 471,295.64

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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.