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Finding the Fourth Proportional to 654,391, 981,608.36 and 181,036.72

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Solution

The fourth proportional to 654,391, 981,608.36 and 181,036.72 is: 271,561.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,391 : 981,608.36 = 181,036.72 : x
  2. Step 2: Convert to fraction form
    654,391/981,608.36 = 181,036.72/x
  3. Step 3: Cross multiply
    654,391x = 981,608.36 × 181,036.72
  4. Step 4: Simplify right side
    654,391x = 177,707,157,818.98
  5. Step 5: Solve for x
    x = 177,707,157,818.98/654,391
  6. Step 6: Final answer
    x = 271,561.13

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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.