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Finding the Fourth Proportional to 98,943.69, 136,573.31 and 63,133.63

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Solution

The fourth proportional to 98,943.69, 136,573.31 and 63,133.63 is: 87,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,943.69 : 136,573.31 = 63,133.63 : x
  2. Step 2: Convert to fraction form
    98,943.69/136,573.31 = 63,133.63/x
  3. Step 3: Cross multiply
    98,943.69x = 136,573.31 × 63,133.63
  4. Step 4: Simplify right side
    98,943.69x = 8,622,368,821.42
  5. Step 5: Solve for x
    x = 8,622,368,821.42/98,943.69
  6. Step 6: Final answer
    x = 87,144.20

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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.