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Finding the Fourth Proportional to 105,647.58, 145,486.44 and 98,893.80

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Solution

The fourth proportional to 105,647.58, 145,486.44 and 98,893.80 is: 136,185.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,647.58 : 145,486.44 = 98,893.80 : x
  2. Step 2: Convert to fraction form
    105,647.58/145,486.44 = 98,893.80/x
  3. Step 3: Cross multiply
    105,647.58x = 145,486.44 × 98,893.80
  4. Step 4: Simplify right side
    105,647.58x = 14,387,706,900.07
  5. Step 5: Solve for x
    x = 14,387,706,900.07/105,647.58
  6. Step 6: Final answer
    x = 136,185.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.