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Finding the Fourth Proportional to 102,617.40, 153,926.10 and 67,596.60

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Solution

The fourth proportional to 102,617.40, 153,926.10 and 67,596.60 is: 101,394.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,617.40 : 153,926.10 = 67,596.60 : x
  2. Step 2: Convert to fraction form
    102,617.40/153,926.10 = 67,596.60/x
  3. Step 3: Cross multiply
    102,617.40x = 153,926.10 × 67,596.60
  4. Step 4: Simplify right side
    102,617.40x = 10,404,881,011.26
  5. Step 5: Solve for x
    x = 10,404,881,011.26/102,617.40
  6. Step 6: Final answer
    x = 101,394.90

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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.