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Finding the Fourth Proportional to 62,983.86, 86,918.85 and 34,689.48

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Solution

The fourth proportional to 62,983.86, 86,918.85 and 34,689.48 is: 47,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,983.86 : 86,918.85 = 34,689.48 : x
  2. Step 2: Convert to fraction form
    62,983.86/86,918.85 = 34,689.48/x
  3. Step 3: Cross multiply
    62,983.86x = 86,918.85 × 34,689.48
  4. Step 4: Simplify right side
    62,983.86x = 3,015,169,708.70
  5. Step 5: Solve for x
    x = 3,015,169,708.70/62,983.86
  6. Step 6: Final answer
    x = 47,872.10

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1.5x scale

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.