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Finding the Fourth Proportional to 79,148.40, 118,621.80 and 32,348.40

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Solution

The fourth proportional to 79,148.40, 118,621.80 and 32,348.40 is: 48,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,148.40 : 118,621.80 = 32,348.40 : x
  2. Step 2: Convert to fraction form
    79,148.40/118,621.80 = 32,348.40/x
  3. Step 3: Cross multiply
    79,148.40x = 118,621.80 × 32,348.40
  4. Step 4: Simplify right side
    79,148.40x = 3,837,225,435.12
  5. Step 5: Solve for x
    x = 3,837,225,435.12/79,148.40
  6. Step 6: Final answer
    x = 48,481.40

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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.