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Finding the Fourth Proportional to 141,998.51, 195,958.58 and 77,467.55

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Solution

The fourth proportional to 141,998.51, 195,958.58 and 77,467.55 is: 106,905.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,998.51 : 195,958.58 = 77,467.55 : x
  2. Step 2: Convert to fraction form
    141,998.51/195,958.58 = 77,467.55/x
  3. Step 3: Cross multiply
    141,998.51x = 195,958.58 × 77,467.55
  4. Step 4: Simplify right side
    141,998.51x = 15,180,431,509.92
  5. Step 5: Solve for x
    x = 15,180,431,509.92/141,998.51
  6. Step 6: Final answer
    x = 106,905.57

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.