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Finding the Fourth Proportional to 98,307.62, 135,662.88 and 54,698.54

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Solution

The fourth proportional to 98,307.62, 135,662.88 and 54,698.54 is: 75,483.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,307.62 : 135,662.88 = 54,698.54 : x
  2. Step 2: Convert to fraction form
    98,307.62/135,662.88 = 54,698.54/x
  3. Step 3: Cross multiply
    98,307.62x = 135,662.88 × 54,698.54
  4. Step 4: Simplify right side
    98,307.62x = 7,420,561,468.20
  5. Step 5: Solve for x
    x = 7,420,561,468.20/98,307.62
  6. Step 6: Final answer
    x = 75,483.08

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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.