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Finding the Fourth Proportional to 38,511.40, 57,669.90 and 30,735.40

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Solution

The fourth proportional to 38,511.40, 57,669.90 and 30,735.40 is: 46,025.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,511.40 : 57,669.90 = 30,735.40 : x
  2. Step 2: Convert to fraction form
    38,511.40/57,669.90 = 30,735.40/x
  3. Step 3: Cross multiply
    38,511.40x = 57,669.90 × 30,735.40
  4. Step 4: Simplify right side
    38,511.40x = 1,772,507,444.46
  5. Step 5: Solve for x
    x = 1,772,507,444.46/38,511.40
  6. Step 6: Final answer
    x = 46,025.53

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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.