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Finding the Fourth Proportional to 263,290.08, 394,894.56 and 85,796.64

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Solution

The fourth proportional to 263,290.08, 394,894.56 and 85,796.64 is: 128,681.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,290.08 : 394,894.56 = 85,796.64 : x
  2. Step 2: Convert to fraction form
    263,290.08/394,894.56 = 85,796.64/x
  3. Step 3: Cross multiply
    263,290.08x = 394,894.56 × 85,796.64
  4. Step 4: Simplify right side
    263,290.08x = 33,880,626,402.28
  5. Step 5: Solve for x
    x = 33,880,626,402.28/263,290.08
  6. Step 6: Final answer
    x = 128,681.74

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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.