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Finding the Fourth Proportional to 153,523.53, 211,859.28 and 85,540.23

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Solution

The fourth proportional to 153,523.53, 211,859.28 and 85,540.23 is: 118,043.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,523.53 : 211,859.28 = 85,540.23 : x
  2. Step 2: Convert to fraction form
    153,523.53/211,859.28 = 85,540.23/x
  3. Step 3: Cross multiply
    153,523.53x = 211,859.28 × 85,540.23
  4. Step 4: Simplify right side
    153,523.53x = 18,122,491,538.83
  5. Step 5: Solve for x
    x = 18,122,491,538.83/153,523.53
  6. Step 6: Final answer
    x = 118,043.74

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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.