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Finding the Fourth Proportional to 83,622.88, 115,361.94 and 49,632.80

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Solution

The fourth proportional to 83,622.88, 115,361.94 and 49,632.80 is: 68,470.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,622.88 : 115,361.94 = 49,632.80 : x
  2. Step 2: Convert to fraction form
    83,622.88/115,361.94 = 49,632.80/x
  3. Step 3: Cross multiply
    83,622.88x = 115,361.94 × 49,632.80
  4. Step 4: Simplify right side
    83,622.88x = 5,725,736,095.63
  5. Step 5: Solve for x
    x = 5,725,736,095.63/83,622.88
  6. Step 6: Final answer
    x = 68,470.93

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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.