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Finding the Fourth Proportional to 92,903.76, 139,453.92 and 57,867.48

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Solution

The fourth proportional to 92,903.76, 139,453.92 and 57,867.48 is: 86,862.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,903.76 : 139,453.92 = 57,867.48 : x
  2. Step 2: Convert to fraction form
    92,903.76/139,453.92 = 57,867.48/x
  3. Step 3: Cross multiply
    92,903.76x = 139,453.92 × 57,867.48
  4. Step 4: Simplify right side
    92,903.76x = 8,069,846,926.52
  5. Step 5: Solve for x
    x = 8,069,846,926.52/92,903.76
  6. Step 6: Final answer
    x = 86,862.44

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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.