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Finding the Fourth Proportional to 92,907.44, 139,368.72 and 55,721.24

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Solution

The fourth proportional to 92,907.44, 139,368.72 and 55,721.24 is: 83,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,907.44 : 139,368.72 = 55,721.24 : x
  2. Step 2: Convert to fraction form
    92,907.44/139,368.72 = 55,721.24/x
  3. Step 3: Cross multiply
    92,907.44x = 139,368.72 × 55,721.24
  4. Step 4: Simplify right side
    92,907.44x = 7,765,797,895.61
  5. Step 5: Solve for x
    x = 7,765,797,895.61/92,907.44
  6. Step 6: Final answer
    x = 83,586.39

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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.