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Finding the Fourth Proportional to 67,054.60, 100,658.70 and 39,368.20

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Solution

The fourth proportional to 67,054.60, 100,658.70 and 39,368.20 is: 59,097.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,054.60 : 100,658.70 = 39,368.20 : x
  2. Step 2: Convert to fraction form
    67,054.60/100,658.70 = 39,368.20/x
  3. Step 3: Cross multiply
    67,054.60x = 100,658.70 × 39,368.20
  4. Step 4: Simplify right side
    67,054.60x = 3,962,751,833.34
  5. Step 5: Solve for x
    x = 3,962,751,833.34/67,054.60
  6. Step 6: Final answer
    x = 59,097.39

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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.