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Finding the Fourth Proportional to 92,960.52, 139,462.64 and 30,631

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Solution

The fourth proportional to 92,960.52, 139,462.64 and 30,631 is: 45,953.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,960.52 : 139,462.64 = 30,631 : x
  2. Step 2: Convert to fraction form
    92,960.52/139,462.64 = 30,631/x
  3. Step 3: Cross multiply
    92,960.52x = 139,462.64 × 30,631
  4. Step 4: Simplify right side
    92,960.52x = 4,271,880,125.84
  5. Step 5: Solve for x
    x = 4,271,880,125.84/92,960.52
  6. Step 6: Final answer
    x = 45,953.70

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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.