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Finding the Fourth Proportional to 66,259.92, 91,437.94 and 49,339.84

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Solution

The fourth proportional to 66,259.92, 91,437.94 and 49,339.84 is: 68,088.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,259.92 : 91,437.94 = 49,339.84 : x
  2. Step 2: Convert to fraction form
    66,259.92/91,437.94 = 49,339.84/x
  3. Step 3: Cross multiply
    66,259.92x = 91,437.94 × 49,339.84
  4. Step 4: Simplify right side
    66,259.92x = 4,511,533,329.53
  5. Step 5: Solve for x
    x = 4,511,533,329.53/66,259.92
  6. Step 6: Final answer
    x = 68,088.42

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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.