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Finding the Fourth Proportional to 30,606.49, 45,904.44 and 8,117.32

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Solution

The fourth proportional to 30,606.49, 45,904.44 and 8,117.32 is: 12,174.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,606.49 : 45,904.44 = 8,117.32 : x
  2. Step 2: Convert to fraction form
    30,606.49/45,904.44 = 8,117.32/x
  3. Step 3: Cross multiply
    30,606.49x = 45,904.44 × 8,117.32
  4. Step 4: Simplify right side
    30,606.49x = 372,621,028.90
  5. Step 5: Solve for x
    x = 372,621,028.90/30,606.49
  6. Step 6: Final answer
    x = 12,174.58

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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.