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Finding the Fourth Proportional to 1,147,658.70, 1,721,584.40 and 348,947.16

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Solution

The fourth proportional to 1,147,658.70, 1,721,584.40 and 348,947.16 is: 523,450.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,658.70 : 1,721,584.40 = 348,947.16 : x
  2. Step 2: Convert to fraction form
    1,147,658.70/1,721,584.40 = 348,947.16/x
  3. Step 3: Cross multiply
    1,147,658.70x = 1,721,584.40 × 348,947.16
  4. Step 4: Simplify right side
    1,147,658.70x = 600,741,987,080.30
  5. Step 5: Solve for x
    x = 600,741,987,080.30/1,147,658.70
  6. Step 6: Final answer
    x = 523,450.04

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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.