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Finding the Fourth Proportional to 92,982.90, 139,474.32 and 30,653.40

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Solution

The fourth proportional to 92,982.90, 139,474.32 and 30,653.40 is: 45,980.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,982.90 : 139,474.32 = 30,653.40 : x
  2. Step 2: Convert to fraction form
    92,982.90/139,474.32 = 30,653.40/x
  3. Step 3: Cross multiply
    92,982.90x = 139,474.32 × 30,653.40
  4. Step 4: Simplify right side
    92,982.90x = 4,275,362,120.69
  5. Step 5: Solve for x
    x = 4,275,362,120.69/92,982.90
  6. Step 6: Final answer
    x = 45,980.09

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1.5x scale

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.