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Finding the Fourth Proportional to 193,561.80, 290,342.70 and 127,206.60

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Solution

The fourth proportional to 193,561.80, 290,342.70 and 127,206.60 is: 190,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,561.80 : 290,342.70 = 127,206.60 : x
  2. Step 2: Convert to fraction form
    193,561.80/290,342.70 = 127,206.60/x
  3. Step 3: Cross multiply
    193,561.80x = 290,342.70 × 127,206.60
  4. Step 4: Simplify right side
    193,561.80x = 36,933,507,701.82
  5. Step 5: Solve for x
    x = 36,933,507,701.82/193,561.80
  6. Step 6: Final answer
    x = 190,809.90

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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.