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Finding the Fourth Proportional to 66,466.62, 91,672.08 and 42,595.52

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Solution

The fourth proportional to 66,466.62, 91,672.08 and 42,595.52 is: 58,748.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,466.62 : 91,672.08 = 42,595.52 : x
  2. Step 2: Convert to fraction form
    66,466.62/91,672.08 = 42,595.52/x
  3. Step 3: Cross multiply
    66,466.62x = 91,672.08 × 42,595.52
  4. Step 4: Simplify right side
    66,466.62x = 3,904,819,917.08
  5. Step 5: Solve for x
    x = 3,904,819,917.08/66,466.62
  6. Step 6: Final answer
    x = 58,748.59

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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.