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Finding the Fourth Proportional to 112,491.59, 168,783.95 and 49,279.05

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Solution

The fourth proportional to 112,491.59, 168,783.95 and 49,279.05 is: 73,938.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,491.59 : 168,783.95 = 49,279.05 : x
  2. Step 2: Convert to fraction form
    112,491.59/168,783.95 = 49,279.05/x
  3. Step 3: Cross multiply
    112,491.59x = 168,783.95 × 49,279.05
  4. Step 4: Simplify right side
    112,491.59x = 8,317,512,834.45
  5. Step 5: Solve for x
    x = 8,317,512,834.45/112,491.59
  6. Step 6: Final answer
    x = 73,938.98

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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.