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Finding the Fourth Proportional to 672,469.70, 1,008,507.71 and 553,846.82

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Solution

The fourth proportional to 672,469.70, 1,008,507.71 and 553,846.82 is: 830,608.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,469.70 : 1,008,507.71 = 553,846.82 : x
  2. Step 2: Convert to fraction form
    672,469.70/1,008,507.71 = 553,846.82/x
  3. Step 3: Cross multiply
    672,469.70x = 1,008,507.71 × 553,846.82
  4. Step 4: Simplify right side
    672,469.70x = 558,558,784,471.06
  5. Step 5: Solve for x
    x = 558,558,784,471.06/672,469.70
  6. Step 6: Final answer
    x = 830,608.11

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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.