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Finding the Fourth Proportional to 535,704.72, 803,561.94 and 136,345.97

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Solution

The fourth proportional to 535,704.72, 803,561.94 and 136,345.97 is: 204,520.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,704.72 : 803,561.94 = 136,345.97 : x
  2. Step 2: Convert to fraction form
    535,704.72/803,561.94 = 136,345.97/x
  3. Step 3: Cross multiply
    535,704.72x = 803,561.94 × 136,345.97
  4. Step 4: Simplify right side
    535,704.72x = 109,562,428,146.57
  5. Step 5: Solve for x
    x = 109,562,428,146.57/535,704.72
  6. Step 6: Final answer
    x = 204,520.18

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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.