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Finding the Fourth Proportional to 92,898.84, 139,250.64 and 45,448.40

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Solution

The fourth proportional to 92,898.84, 139,250.64 and 45,448.40 is: 68,124.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,898.84 : 139,250.64 = 45,448.40 : x
  2. Step 2: Convert to fraction form
    92,898.84/139,250.64 = 45,448.40/x
  3. Step 3: Cross multiply
    92,898.84x = 139,250.64 × 45,448.40
  4. Step 4: Simplify right side
    92,898.84x = 6,328,718,786.98
  5. Step 5: Solve for x
    x = 6,328,718,786.98/92,898.84
  6. Step 6: Final answer
    x = 68,124.84

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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.