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Finding the Fourth Proportional to 104,364.73, 143,975.50 and 61,907.77

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Solution

The fourth proportional to 104,364.73, 143,975.50 and 61,907.77 is: 85,404.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,364.73 : 143,975.50 = 61,907.77 : x
  2. Step 2: Convert to fraction form
    104,364.73/143,975.50 = 61,907.77/x
  3. Step 3: Cross multiply
    104,364.73x = 143,975.50 × 61,907.77
  4. Step 4: Simplify right side
    104,364.73x = 8,913,202,139.64
  5. Step 5: Solve for x
    x = 8,913,202,139.64/104,364.73
  6. Step 6: Final answer
    x = 85,404.35

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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.