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Finding the Fourth Proportional to 92,880.70, 139,278.52 and 29,688.55

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Solution

The fourth proportional to 92,880.70, 139,278.52 and 29,688.55 is: 44,519.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,880.70 : 139,278.52 = 29,688.55 : x
  2. Step 2: Convert to fraction form
    92,880.70/139,278.52 = 29,688.55/x
  3. Step 3: Cross multiply
    92,880.70x = 139,278.52 × 29,688.55
  4. Step 4: Simplify right side
    92,880.70x = 4,134,977,304.95
  5. Step 5: Solve for x
    x = 4,134,977,304.95/92,880.70
  6. Step 6: Final answer
    x = 44,519.23

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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.