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Finding the Fourth Proportional to 66,661.76, 99,992.64 and 46,016.48

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Solution

The fourth proportional to 66,661.76, 99,992.64 and 46,016.48 is: 69,024.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,661.76 : 99,992.64 = 46,016.48 : x
  2. Step 2: Convert to fraction form
    66,661.76/99,992.64 = 46,016.48/x
  3. Step 3: Cross multiply
    66,661.76x = 99,992.64 × 46,016.48
  4. Step 4: Simplify right side
    66,661.76x = 4,601,309,318.71
  5. Step 5: Solve for x
    x = 4,601,309,318.71/66,661.76
  6. Step 6: Final answer
    x = 69,024.72

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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.