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Finding the Fourth Proportional to 393,645.40, 590,525.70 and 127,360.60

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Solution

The fourth proportional to 393,645.40, 590,525.70 and 127,360.60 is: 191,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,645.40 : 590,525.70 = 127,360.60 : x
  2. Step 2: Convert to fraction form
    393,645.40/590,525.70 = 127,360.60/x
  3. Step 3: Cross multiply
    393,645.40x = 590,525.70 × 127,360.60
  4. Step 4: Simplify right side
    393,645.40x = 75,209,707,467.42
  5. Step 5: Solve for x
    x = 75,209,707,467.42/393,645.40
  6. Step 6: Final answer
    x = 191,059.54

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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.