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Finding the Fourth Proportional to 202,061.40, 303,063.30 and 68,947.80

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Solution

The fourth proportional to 202,061.40, 303,063.30 and 68,947.80 is: 103,411.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,061.40 : 303,063.30 = 68,947.80 : x
  2. Step 2: Convert to fraction form
    202,061.40/303,063.30 = 68,947.80/x
  3. Step 3: Cross multiply
    202,061.40x = 303,063.30 × 68,947.80
  4. Step 4: Simplify right side
    202,061.40x = 20,895,547,795.74
  5. Step 5: Solve for x
    x = 20,895,547,795.74/202,061.40
  6. Step 6: Final answer
    x = 103,411.87

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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.