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Finding the Fourth Proportional to 622,098.65, 931,653.28 and 355,049.55

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Solution

The fourth proportional to 622,098.65, 931,653.28 and 355,049.55 is: 531,721.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,098.65 : 931,653.28 = 355,049.55 : x
  2. Step 2: Convert to fraction form
    622,098.65/931,653.28 = 355,049.55/x
  3. Step 3: Cross multiply
    622,098.65x = 931,653.28 × 355,049.55
  4. Step 4: Simplify right side
    622,098.65x = 330,783,077,820.02
  5. Step 5: Solve for x
    x = 330,783,077,820.02/622,098.65
  6. Step 6: Final answer
    x = 531,721.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.