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Finding the Fourth Proportional to 161,288.40, 241,644.60 and 77,998.80

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Solution

The fourth proportional to 161,288.40, 241,644.60 and 77,998.80 is: 116,858.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,288.40 : 241,644.60 = 77,998.80 : x
  2. Step 2: Convert to fraction form
    161,288.40/241,644.60 = 77,998.80/x
  3. Step 3: Cross multiply
    161,288.40x = 241,644.60 × 77,998.80
  4. Step 4: Simplify right side
    161,288.40x = 18,847,988,826.48
  5. Step 5: Solve for x
    x = 18,847,988,826.48/161,288.40
  6. Step 6: Final answer
    x = 116,858.92

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1.5x scale

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.