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Finding the Fourth Proportional to 92,980.20, 139,475.70 and 26,425.20

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Solution

The fourth proportional to 92,980.20, 139,475.70 and 26,425.20 is: 39,639.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,980.20 : 139,475.70 = 26,425.20 : x
  2. Step 2: Convert to fraction form
    92,980.20/139,475.70 = 26,425.20/x
  3. Step 3: Cross multiply
    92,980.20x = 139,475.70 × 26,425.20
  4. Step 4: Simplify right side
    92,980.20x = 3,685,673,267.64
  5. Step 5: Solve for x
    x = 3,685,673,267.64/92,980.20
  6. Step 6: Final answer
    x = 39,639.33

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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.