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Finding the Fourth Proportional to 105,316.39, 145,339.41 and 62,899.39

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Solution

The fourth proportional to 105,316.39, 145,339.41 and 62,899.39 is: 86,802.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,316.39 : 145,339.41 = 62,899.39 : x
  2. Step 2: Convert to fraction form
    105,316.39/145,339.41 = 62,899.39/x
  3. Step 3: Cross multiply
    105,316.39x = 145,339.41 × 62,899.39
  4. Step 4: Simplify right side
    105,316.39x = 9,141,760,231.96
  5. Step 5: Solve for x
    x = 9,141,760,231.96/105,316.39
  6. Step 6: Final answer
    x = 86,802.83

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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.