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Finding the Fourth Proportional to 157,993.06, 218,030.40 and 86,373.06

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Solution

The fourth proportional to 157,993.06, 218,030.40 and 86,373.06 is: 119,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,993.06 : 218,030.40 = 86,373.06 : x
  2. Step 2: Convert to fraction form
    157,993.06/218,030.40 = 86,373.06/x
  3. Step 3: Cross multiply
    157,993.06x = 218,030.40 × 86,373.06
  4. Step 4: Simplify right side
    157,993.06x = 18,831,952,821.02
  5. Step 5: Solve for x
    x = 18,831,952,821.02/157,993.06
  6. Step 6: Final answer
    x = 119,194.81

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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.