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Finding the Fourth Proportional to 92,980.71, 139,469.85 and 22,860.63

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Solution

The fourth proportional to 92,980.71, 139,469.85 and 22,860.63 is: 34,290.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,980.71 : 139,469.85 = 22,860.63 : x
  2. Step 2: Convert to fraction form
    92,980.71/139,469.85 = 22,860.63/x
  3. Step 3: Cross multiply
    92,980.71x = 139,469.85 × 22,860.63
  4. Step 4: Simplify right side
    92,980.71x = 3,188,368,637.01
  5. Step 5: Solve for x
    x = 3,188,368,637.01/92,980.71
  6. Step 6: Final answer
    x = 34,290.65

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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.