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Finding the Fourth Proportional to 66,310.77, 99,467.20 and 36,915.44

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Solution

The fourth proportional to 66,310.77, 99,467.20 and 36,915.44 is: 55,373.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,310.77 : 99,467.20 = 36,915.44 : x
  2. Step 2: Convert to fraction form
    66,310.77/99,467.20 = 36,915.44/x
  3. Step 3: Cross multiply
    66,310.77x = 99,467.20 × 36,915.44
  4. Step 4: Simplify right side
    66,310.77x = 3,671,874,956.23
  5. Step 5: Solve for x
    x = 3,671,874,956.23/66,310.77
  6. Step 6: Final answer
    x = 55,373.74

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1.5x scale

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.