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Finding the Fourth Proportional to 262,485.35, 393,785.44 and 85,010.30

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Solution

The fourth proportional to 262,485.35, 393,785.44 and 85,010.30 is: 127,534.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,485.35 : 393,785.44 = 85,010.30 : x
  2. Step 2: Convert to fraction form
    262,485.35/393,785.44 = 85,010.30/x
  3. Step 3: Cross multiply
    262,485.35x = 393,785.44 × 85,010.30
  4. Step 4: Simplify right side
    262,485.35x = 33,475,818,163.46
  5. Step 5: Solve for x
    x = 33,475,818,163.46/262,485.35
  6. Step 6: Final answer
    x = 127,534.04

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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.