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Finding the Fourth Proportional to 66,312.39, 99,469.64 and 36,917.07

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Solution

The fourth proportional to 66,312.39, 99,469.64 and 36,917.07 is: 55,376.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,312.39 : 99,469.64 = 36,917.07 : x
  2. Step 2: Convert to fraction form
    66,312.39/99,469.64 = 36,917.07/x
  3. Step 3: Cross multiply
    66,312.39x = 99,469.64 × 36,917.07
  4. Step 4: Simplify right side
    66,312.39x = 3,672,127,662.75
  5. Step 5: Solve for x
    x = 3,672,127,662.75/66,312.39
  6. Step 6: Final answer
    x = 55,376.19

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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.