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Finding the Fourth Proportional to 18,193.65, 25,108.70 and 10,235.40

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Solution

The fourth proportional to 18,193.65, 25,108.70 and 10,235.40 is: 14,125.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,193.65 : 25,108.70 = 10,235.40 : x
  2. Step 2: Convert to fraction form
    18,193.65/25,108.70 = 10,235.40/x
  3. Step 3: Cross multiply
    18,193.65x = 25,108.70 × 10,235.40
  4. Step 4: Simplify right side
    18,193.65x = 256,997,536.80
  5. Step 5: Solve for x
    x = 256,997,536.80/18,193.65
  6. Step 6: Final answer
    x = 14,125.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.