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Finding the Fourth Proportional to 69,720.93, 96,213.90 and 37,889.94

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Solution

The fourth proportional to 69,720.93, 96,213.90 and 37,889.94 is: 52,287.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,720.93 : 96,213.90 = 37,889.94 : x
  2. Step 2: Convert to fraction form
    69,720.93/96,213.90 = 37,889.94/x
  3. Step 3: Cross multiply
    69,720.93x = 96,213.90 × 37,889.94
  4. Step 4: Simplify right side
    69,720.93x = 3,645,538,898.17
  5. Step 5: Solve for x
    x = 3,645,538,898.17/69,720.93
  6. Step 6: Final answer
    x = 52,287.58

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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.