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Finding the Fourth Proportional to 193,891.51, 291,109.73 and 99,189.62

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Solution

The fourth proportional to 193,891.51, 291,109.73 and 99,189.62 is: 148,923.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,891.51 : 291,109.73 = 99,189.62 : x
  2. Step 2: Convert to fraction form
    193,891.51/291,109.73 = 99,189.62/x
  3. Step 3: Cross multiply
    193,891.51x = 291,109.73 × 99,189.62
  4. Step 4: Simplify right side
    193,891.51x = 28,875,064,472.75
  5. Step 5: Solve for x
    x = 28,875,064,472.75/193,891.51
  6. Step 6: Final answer
    x = 148,923.82

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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.