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Finding the Fourth Proportional to 158,515.48, 218,773.68 and 98,105.48

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Solution

The fourth proportional to 158,515.48, 218,773.68 and 98,105.48 is: 135,399.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,515.48 : 218,773.68 = 98,105.48 : x
  2. Step 2: Convert to fraction form
    158,515.48/218,773.68 = 98,105.48/x
  3. Step 3: Cross multiply
    158,515.48x = 218,773.68 × 98,105.48
  4. Step 4: Simplify right side
    158,515.48x = 21,462,896,887.77
  5. Step 5: Solve for x
    x = 21,462,896,887.77/158,515.48
  6. Step 6: Final answer
    x = 135,399.37

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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.