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Finding the Fourth Proportional to 38,415.80, 57,623.60 and 10,713.80

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Solution

The fourth proportional to 38,415.80, 57,623.60 and 10,713.80 is: 16,070.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,415.80 : 57,623.60 = 10,713.80 : x
  2. Step 2: Convert to fraction form
    38,415.80/57,623.60 = 10,713.80/x
  3. Step 3: Cross multiply
    38,415.80x = 57,623.60 × 10,713.80
  4. Step 4: Simplify right side
    38,415.80x = 617,367,725.68
  5. Step 5: Solve for x
    x = 617,367,725.68/38,415.80
  6. Step 6: Final answer
    x = 16,070.67

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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.