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Finding the Fourth Proportional to 143,721.10, 200,947.10 and 143,721.10

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Solution

The fourth proportional to 143,721.10, 200,947.10 and 143,721.10 is: 200,947.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,721.10 : 200,947.10 = 143,721.10 : x
  2. Step 2: Convert to fraction form
    143,721.10/200,947.10 = 143,721.10/x
  3. Step 3: Cross multiply
    143,721.10x = 200,947.10 × 143,721.10
  4. Step 4: Simplify right side
    143,721.10x = 28,880,338,253.81
  5. Step 5: Solve for x
    x = 28,880,338,253.81/143,721.10
  6. Step 6: Final answer
    x = 200,947.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.