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Finding the Fourth Proportional to 66,731.60, 92,089.61 and 36,516.93

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Solution

The fourth proportional to 66,731.60, 92,089.61 and 36,516.93 is: 50,393.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,731.60 : 92,089.61 = 36,516.93 : x
  2. Step 2: Convert to fraction form
    66,731.60/92,089.61 = 36,516.93/x
  3. Step 3: Cross multiply
    66,731.60x = 92,089.61 × 36,516.93
  4. Step 4: Simplify right side
    66,731.60x = 3,362,829,659.51
  5. Step 5: Solve for x
    x = 3,362,829,659.51/66,731.60
  6. Step 6: Final answer
    x = 50,393.36

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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.