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Finding the Fourth Proportional to 78,748.94, 118,056.49 and 36,653.47

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Solution

The fourth proportional to 78,748.94, 118,056.49 and 36,653.47 is: 54,949.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,748.94 : 118,056.49 = 36,653.47 : x
  2. Step 2: Convert to fraction form
    78,748.94/118,056.49 = 36,653.47/x
  3. Step 3: Cross multiply
    78,748.94x = 118,056.49 × 36,653.47
  4. Step 4: Simplify right side
    78,748.94x = 4,327,180,014.52
  5. Step 5: Solve for x
    x = 4,327,180,014.52/78,748.94
  6. Step 6: Final answer
    x = 54,949.06

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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.