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Finding the Fourth Proportional to 66,308.69, 91,507.16 and 36,094.88

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Solution

The fourth proportional to 66,308.69, 91,507.16 and 36,094.88 is: 49,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,308.69 : 91,507.16 = 36,094.88 : x
  2. Step 2: Convert to fraction form
    66,308.69/91,507.16 = 36,094.88/x
  3. Step 3: Cross multiply
    66,308.69x = 91,507.16 × 36,094.88
  4. Step 4: Simplify right side
    66,308.69x = 3,302,939,869.10
  5. Step 5: Solve for x
    x = 3,302,939,869.10/66,308.69
  6. Step 6: Final answer
    x = 49,811.57

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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.