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Finding the Fourth Proportional to 127,707.99, 191,561.46 and 38,961.20

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Solution

The fourth proportional to 127,707.99, 191,561.46 and 38,961.20 is: 58,441.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,707.99 : 191,561.46 = 38,961.20 : x
  2. Step 2: Convert to fraction form
    127,707.99/191,561.46 = 38,961.20/x
  3. Step 3: Cross multiply
    127,707.99x = 191,561.46 × 38,961.20
  4. Step 4: Simplify right side
    127,707.99x = 7,463,464,688.15
  5. Step 5: Solve for x
    x = 7,463,464,688.15/127,707.99
  6. Step 6: Final answer
    x = 58,441.64

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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.