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Finding the Fourth Proportional to 166,553.72, 249,719.60 and 91,709.10

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Solution

The fourth proportional to 166,553.72, 249,719.60 and 91,709.10 is: 137,502.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,553.72 : 249,719.60 = 91,709.10 : x
  2. Step 2: Convert to fraction form
    166,553.72/249,719.60 = 91,709.10/x
  3. Step 3: Cross multiply
    166,553.72x = 249,719.60 × 91,709.10
  4. Step 4: Simplify right side
    166,553.72x = 22,901,559,309.81
  5. Step 5: Solve for x
    x = 22,901,559,309.81/166,553.72
  6. Step 6: Final answer
    x = 137,502.54

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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.