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Finding the Fourth Proportional to 263,394.40, 395,117.52 and 85,894.24

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Solution

The fourth proportional to 263,394.40, 395,117.52 and 85,894.24 is: 128,849.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,394.40 : 395,117.52 = 85,894.24 : x
  2. Step 2: Convert to fraction form
    263,394.40/395,117.52 = 85,894.24/x
  3. Step 3: Cross multiply
    263,394.40x = 395,117.52 × 85,894.24
  4. Step 4: Simplify right side
    263,394.40x = 33,938,319,091.08
  5. Step 5: Solve for x
    x = 33,938,319,091.08/263,394.40
  6. Step 6: Final answer
    x = 128,849.81

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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.