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Finding the Fourth Proportional to 476,885.99, 715,439.78 and 139,913.03

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Solution

The fourth proportional to 476,885.99, 715,439.78 and 139,913.03 is: 209,902.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,885.99 : 715,439.78 = 139,913.03 : x
  2. Step 2: Convert to fraction form
    476,885.99/715,439.78 = 139,913.03/x
  3. Step 3: Cross multiply
    476,885.99x = 715,439.78 × 139,913.03
  4. Step 4: Simplify right side
    476,885.99x = 100,099,343,125.57
  5. Step 5: Solve for x
    x = 100,099,343,125.57/476,885.99
  6. Step 6: Final answer
    x = 209,902.04

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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.