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Finding the Fourth Proportional to 107,361.30, 161,069.79 and 40,802.58

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Solution

The fourth proportional to 107,361.30, 161,069.79 and 40,802.58 is: 61,214.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,361.30 : 161,069.79 = 40,802.58 : x
  2. Step 2: Convert to fraction form
    107,361.30/161,069.79 = 40,802.58/x
  3. Step 3: Cross multiply
    107,361.30x = 161,069.79 × 40,802.58
  4. Step 4: Simplify right side
    107,361.30x = 6,572,062,992.06
  5. Step 5: Solve for x
    x = 6,572,062,992.06/107,361.30
  6. Step 6: Final answer
    x = 61,214.45

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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.