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Finding the Fourth Proportional to 97,672.40, 146,508.60 and 31,106.60

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Solution

The fourth proportional to 97,672.40, 146,508.60 and 31,106.60 is: 46,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,672.40 : 146,508.60 = 31,106.60 : x
  2. Step 2: Convert to fraction form
    97,672.40/146,508.60 = 31,106.60/x
  3. Step 3: Cross multiply
    97,672.40x = 146,508.60 × 31,106.60
  4. Step 4: Simplify right side
    97,672.40x = 4,557,384,416.76
  5. Step 5: Solve for x
    x = 4,557,384,416.76/97,672.40
  6. Step 6: Final answer
    x = 46,659.90

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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.