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Finding the Fourth Proportional to 78,524.94, 117,740.58 and 53,255.58

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Solution

The fourth proportional to 78,524.94, 117,740.58 and 53,255.58 is: 79,851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,524.94 : 117,740.58 = 53,255.58 : x
  2. Step 2: Convert to fraction form
    78,524.94/117,740.58 = 53,255.58/x
  3. Step 3: Cross multiply
    78,524.94x = 117,740.58 × 53,255.58
  4. Step 4: Simplify right side
    78,524.94x = 6,270,342,877.44
  5. Step 5: Solve for x
    x = 6,270,342,877.44/78,524.94
  6. Step 6: Final answer
    x = 79,851.61

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1.5x scale

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.