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Finding the Fourth Proportional to 211,315.39, 316,869.39 and 104,576.02

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Solution

The fourth proportional to 211,315.39, 316,869.39 and 104,576.02 is: 156,812.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,315.39 : 316,869.39 = 104,576.02 : x
  2. Step 2: Convert to fraction form
    211,315.39/316,869.39 = 104,576.02/x
  3. Step 3: Cross multiply
    211,315.39x = 316,869.39 × 104,576.02
  4. Step 4: Simplify right side
    211,315.39x = 33,136,938,873.85
  5. Step 5: Solve for x
    x = 33,136,938,873.85/211,315.39
  6. Step 6: Final answer
    x = 156,812.71

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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.