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Finding the Fourth Proportional to 399,706.02, 599,653.41 and 129,833.34

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Solution

The fourth proportional to 399,706.02, 599,653.41 and 129,833.34 is: 194,780.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,706.02 : 599,653.41 = 129,833.34 : x
  2. Step 2: Convert to fraction form
    399,706.02/599,653.41 = 129,833.34/x
  3. Step 3: Cross multiply
    399,706.02x = 599,653.41 × 129,833.34
  4. Step 4: Simplify right side
    399,706.02x = 77,855,005,062.69
  5. Step 5: Solve for x
    x = 77,855,005,062.69/399,706.02
  6. Step 6: Final answer
    x = 194,780.67

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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.