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Finding the Fourth Proportional to 262,352.80, 393,529.20 and 84,865.60

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Solution

The fourth proportional to 262,352.80, 393,529.20 and 84,865.60 is: 127,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,352.80 : 393,529.20 = 84,865.60 : x
  2. Step 2: Convert to fraction form
    262,352.80/393,529.20 = 84,865.60/x
  3. Step 3: Cross multiply
    262,352.80x = 393,529.20 × 84,865.60
  4. Step 4: Simplify right side
    262,352.80x = 33,397,091,675.52
  5. Step 5: Solve for x
    x = 33,397,091,675.52/262,352.80
  6. Step 6: Final answer
    x = 127,298.40

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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.