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Finding the Fourth Proportional to 83,706.84, 115,515.36 and 45,983.52

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Solution

The fourth proportional to 83,706.84, 115,515.36 and 45,983.52 is: 63,457.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,706.84 : 115,515.36 = 45,983.52 : x
  2. Step 2: Convert to fraction form
    83,706.84/115,515.36 = 45,983.52/x
  3. Step 3: Cross multiply
    83,706.84x = 115,515.36 × 45,983.52
  4. Step 4: Simplify right side
    83,706.84x = 5,311,802,866.87
  5. Step 5: Solve for x
    x = 5,311,802,866.87/83,706.84
  6. Step 6: Final answer
    x = 63,457.21

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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.