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Finding the Fourth Proportional to 116,989.96, 161,446.17 and 66,013.51

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Solution

The fourth proportional to 116,989.96, 161,446.17 and 66,013.51 is: 91,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,989.96 : 161,446.17 = 66,013.51 : x
  2. Step 2: Convert to fraction form
    116,989.96/161,446.17 = 66,013.51/x
  3. Step 3: Cross multiply
    116,989.96x = 161,446.17 × 66,013.51
  4. Step 4: Simplify right side
    116,989.96x = 10,657,628,357.76
  5. Step 5: Solve for x
    x = 10,657,628,357.76/116,989.96
  6. Step 6: Final answer
    x = 91,098.66

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1.5x scale

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.