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Finding the Fourth Proportional to 62,915.50, 86,820.83 and 36,039.32

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Solution

The fourth proportional to 62,915.50, 86,820.83 and 36,039.32 is: 49,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,915.50 : 86,820.83 = 36,039.32 : x
  2. Step 2: Convert to fraction form
    62,915.50/86,820.83 = 36,039.32/x
  3. Step 3: Cross multiply
    62,915.50x = 86,820.83 × 36,039.32
  4. Step 4: Simplify right side
    62,915.50x = 3,128,963,982.19
  5. Step 5: Solve for x
    x = 3,128,963,982.19/62,915.50
  6. Step 6: Final answer
    x = 49,732.80

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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.