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Finding the Fourth Proportional to 131.69, 181.71 and 73.46

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Solution

The fourth proportional to 131.69, 181.71 and 73.46 is: 101.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.69 : 181.71 = 73.46 : x
  2. Step 2: Convert to fraction form
    131.69/181.71 = 73.46/x
  3. Step 3: Cross multiply
    131.69x = 181.71 × 73.46
  4. Step 4: Simplify right side
    131.69x = 13,347.51
  5. Step 5: Solve for x
    x = 13,347.51/131.69
  6. Step 6: Final answer
    x = 101.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.