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Finding the Fourth Proportional to 98,996.88, 148,495.28 and 28,881.84

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Solution

The fourth proportional to 98,996.88, 148,495.28 and 28,881.84 is: 43,322.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,996.88 : 148,495.28 = 28,881.84 : x
  2. Step 2: Convert to fraction form
    98,996.88/148,495.28 = 28,881.84/x
  3. Step 3: Cross multiply
    98,996.88x = 148,495.28 × 28,881.84
  4. Step 4: Simplify right side
    98,996.88x = 4,288,816,917.72
  5. Step 5: Solve for x
    x = 4,288,816,917.72/98,996.88
  6. Step 6: Final answer
    x = 43,322.75

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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.