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Finding the Fourth Proportional to 98,851.84, 136,415.82 and 53,530.36

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Solution

The fourth proportional to 98,851.84, 136,415.82 and 53,530.36 is: 73,872.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,851.84 : 136,415.82 = 53,530.36 : x
  2. Step 2: Convert to fraction form
    98,851.84/136,415.82 = 53,530.36/x
  3. Step 3: Cross multiply
    98,851.84x = 136,415.82 × 53,530.36
  4. Step 4: Simplify right side
    98,851.84x = 7,302,387,954.30
  5. Step 5: Solve for x
    x = 7,302,387,954.30/98,851.84
  6. Step 6: Final answer
    x = 73,872.05

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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.