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Finding the Fourth Proportional to 79,119, 109,185.42 and 43,312.34

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Solution

The fourth proportional to 79,119, 109,185.42 and 43,312.34 is: 59,771.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,119 : 109,185.42 = 43,312.34 : x
  2. Step 2: Convert to fraction form
    79,119/109,185.42 = 43,312.34/x
  3. Step 3: Cross multiply
    79,119x = 109,185.42 × 43,312.34
  4. Step 4: Simplify right side
    79,119x = 4,729,075,488.16
  5. Step 5: Solve for x
    x = 4,729,075,488.16/79,119
  6. Step 6: Final answer
    x = 59,771.68

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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.