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Finding the Fourth Proportional to 104,395.65, 144,069.19 and 61,367.25

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Solution

The fourth proportional to 104,395.65, 144,069.19 and 61,367.25 is: 84,688.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,395.65 : 144,069.19 = 61,367.25 : x
  2. Step 2: Convert to fraction form
    104,395.65/144,069.19 = 61,367.25/x
  3. Step 3: Cross multiply
    104,395.65x = 144,069.19 × 61,367.25
  4. Step 4: Simplify right side
    104,395.65x = 8,841,130,000.03
  5. Step 5: Solve for x
    x = 8,841,130,000.03/104,395.65
  6. Step 6: Final answer
    x = 84,688.69

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Why These Related Problems?

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