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Finding the Fourth Proportional to 205,098.40, 307,316.40 and 116,087.20

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Solution

The fourth proportional to 205,098.40, 307,316.40 and 116,087.20 is: 173,943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,098.40 : 307,316.40 = 116,087.20 : x
  2. Step 2: Convert to fraction form
    205,098.40/307,316.40 = 116,087.20/x
  3. Step 3: Cross multiply
    205,098.40x = 307,316.40 × 116,087.20
  4. Step 4: Simplify right side
    205,098.40x = 35,675,500,390.08
  5. Step 5: Solve for x
    x = 35,675,500,390.08/205,098.40
  6. Step 6: Final answer
    x = 173,943.34

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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.