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Finding the Fourth Proportional to 79,251.40, 118,811.58 and 61,798.60

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Solution

The fourth proportional to 79,251.40, 118,811.58 and 61,798.60 is: 92,646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,251.40 : 118,811.58 = 61,798.60 : x
  2. Step 2: Convert to fraction form
    79,251.40/118,811.58 = 61,798.60/x
  3. Step 3: Cross multiply
    79,251.40x = 118,811.58 × 61,798.60
  4. Step 4: Simplify right side
    79,251.40x = 7,342,389,307.79
  5. Step 5: Solve for x
    x = 7,342,389,307.79/79,251.40
  6. Step 6: Final answer
    x = 92,646.81

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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.