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Finding the Fourth Proportional to 66,851.91, 100,255.99 and 31,302.23

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Solution

The fourth proportional to 66,851.91, 100,255.99 and 31,302.23 is: 46,943.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,851.91 : 100,255.99 = 31,302.23 : x
  2. Step 2: Convert to fraction form
    66,851.91/100,255.99 = 31,302.23/x
  3. Step 3: Cross multiply
    66,851.91x = 100,255.99 × 31,302.23
  4. Step 4: Simplify right side
    66,851.91x = 3,138,235,478.32
  5. Step 5: Solve for x
    x = 3,138,235,478.32/66,851.91
  6. Step 6: Final answer
    x = 46,943.09

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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.