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Finding the Fourth Proportional to 262,588.80, 393,883.20 and 85,101.60

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Solution

The fourth proportional to 262,588.80, 393,883.20 and 85,101.60 is: 127,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,588.80 : 393,883.20 = 85,101.60 : x
  2. Step 2: Convert to fraction form
    262,588.80/393,883.20 = 85,101.60/x
  3. Step 3: Cross multiply
    262,588.80x = 393,883.20 × 85,101.60
  4. Step 4: Simplify right side
    262,588.80x = 33,520,090,533.12
  5. Step 5: Solve for x
    x = 33,520,090,533.12/262,588.80
  6. Step 6: Final answer
    x = 127,652.40

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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.