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Finding the Fourth Proportional to 66,611.34, 91,920.99 and 37,934.91

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Solution

The fourth proportional to 66,611.34, 91,920.99 and 37,934.91 is: 52,348.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,611.34 : 91,920.99 = 37,934.91 : x
  2. Step 2: Convert to fraction form
    66,611.34/91,920.99 = 37,934.91/x
  3. Step 3: Cross multiply
    66,611.34x = 91,920.99 × 37,934.91
  4. Step 4: Simplify right side
    66,611.34x = 3,487,014,482.76
  5. Step 5: Solve for x
    x = 3,487,014,482.76/66,611.34
  6. Step 6: Final answer
    x = 52,348.66

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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.