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Finding the Fourth Proportional to 68,896.88, 103,205.90 and 63,156.00

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Solution

The fourth proportional to 68,896.88, 103,205.90 and 63,156.00 is: 94,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,896.88 : 103,205.90 = 63,156.00 : x
  2. Step 2: Convert to fraction form
    68,896.88/103,205.90 = 63,156.00/x
  3. Step 3: Cross multiply
    68,896.88x = 103,205.90 × 63,156.00
  4. Step 4: Simplify right side
    68,896.88x = 6,518,072,010.06
  5. Step 5: Solve for x
    x = 6,518,072,010.06/68,896.88
  6. Step 6: Final answer
    x = 94,606.20

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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.