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Finding the Fourth Proportional to 66,056.94, 99,085.41 and 19,309.82

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Solution

The fourth proportional to 66,056.94, 99,085.41 and 19,309.82 is: 28,964.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,056.94 : 99,085.41 = 19,309.82 : x
  2. Step 2: Convert to fraction form
    66,056.94/99,085.41 = 19,309.82/x
  3. Step 3: Cross multiply
    66,056.94x = 99,085.41 × 19,309.82
  4. Step 4: Simplify right side
    66,056.94x = 1,913,320,936.30
  5. Step 5: Solve for x
    x = 1,913,320,936.30/66,056.94
  6. Step 6: Final answer
    x = 28,964.72

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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.