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Finding the Fourth Proportional to 424,963.81, 637,513.38 and 140,664.74

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Solution

The fourth proportional to 424,963.81, 637,513.38 and 140,664.74 is: 211,019.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,963.81 : 637,513.38 = 140,664.74 : x
  2. Step 2: Convert to fraction form
    424,963.81/637,513.38 = 140,664.74/x
  3. Step 3: Cross multiply
    424,963.81x = 637,513.38 × 140,664.74
  4. Step 4: Simplify right side
    424,963.81x = 89,675,655,438.00
  5. Step 5: Solve for x
    x = 89,675,655,438.00/424,963.81
  6. Step 6: Final answer
    x = 211,019.51

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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.