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Finding the Fourth Proportional to 101,913.43, 140,653.49 and 61,627.47

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Solution

The fourth proportional to 101,913.43, 140,653.49 and 61,627.47 is: 85,053.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,913.43 : 140,653.49 = 61,627.47 : x
  2. Step 2: Convert to fraction form
    101,913.43/140,653.49 = 61,627.47/x
  3. Step 3: Cross multiply
    101,913.43x = 140,653.49 × 61,627.47
  4. Step 4: Simplify right side
    101,913.43x = 8,668,118,427.23
  5. Step 5: Solve for x
    x = 8,668,118,427.23/101,913.43
  6. Step 6: Final answer
    x = 85,053.74

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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.