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Finding the Fourth Proportional to 92,900.88, 139,530.60 and 79,603.92

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Solution

The fourth proportional to 92,900.88, 139,530.60 and 79,603.92 is: 119,559.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,900.88 : 139,530.60 = 79,603.92 : x
  2. Step 2: Convert to fraction form
    92,900.88/139,530.60 = 79,603.92/x
  3. Step 3: Cross multiply
    92,900.88x = 139,530.60 × 79,603.92
  4. Step 4: Simplify right side
    92,900.88x = 11,107,182,719.95
  5. Step 5: Solve for x
    x = 11,107,182,719.95/92,900.88
  6. Step 6: Final answer
    x = 119,559.50

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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.