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Finding the Fourth Proportional to 69,129.70, 103,668.63 and 29,666.50

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Solution

The fourth proportional to 69,129.70, 103,668.63 and 29,666.50 is: 44,488.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,129.70 : 103,668.63 = 29,666.50 : x
  2. Step 2: Convert to fraction form
    69,129.70/103,668.63 = 29,666.50/x
  3. Step 3: Cross multiply
    69,129.70x = 103,668.63 × 29,666.50
  4. Step 4: Simplify right side
    69,129.70x = 3,075,485,411.90
  5. Step 5: Solve for x
    x = 3,075,485,411.90/69,129.70
  6. Step 6: Final answer
    x = 44,488.63

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.