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Finding the Fourth Proportional to 66,290.67, 91,483.19 and 37,611.54

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Solution

The fourth proportional to 66,290.67, 91,483.19 and 37,611.54 is: 51,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,290.67 : 91,483.19 = 37,611.54 : x
  2. Step 2: Convert to fraction form
    66,290.67/91,483.19 = 37,611.54/x
  3. Step 3: Cross multiply
    66,290.67x = 91,483.19 × 37,611.54
  4. Step 4: Simplify right side
    66,290.67x = 3,440,823,613.00
  5. Step 5: Solve for x
    x = 3,440,823,613.00/66,290.67
  6. Step 6: Final answer
    x = 51,905.10

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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.