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Finding the Fourth Proportional to 173,090.40, 259,489.80 and 89,984.40

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Solution

The fourth proportional to 173,090.40, 259,489.80 and 89,984.40 is: 134,900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,090.40 : 259,489.80 = 89,984.40 : x
  2. Step 2: Convert to fraction form
    173,090.40/259,489.80 = 89,984.40/x
  3. Step 3: Cross multiply
    173,090.40x = 259,489.80 × 89,984.40
  4. Step 4: Simplify right side
    173,090.40x = 23,350,033,959.12
  5. Step 5: Solve for x
    x = 23,350,033,959.12/173,090.40
  6. Step 6: Final answer
    x = 134,900.80

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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.