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Finding the Fourth Proportional to 19,484.74, 26,888.54 and 10,986.88

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Solution

The fourth proportional to 19,484.74, 26,888.54 and 10,986.88 is: 15,161.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,484.74 : 26,888.54 = 10,986.88 : x
  2. Step 2: Convert to fraction form
    19,484.74/26,888.54 = 10,986.88/x
  3. Step 3: Cross multiply
    19,484.74x = 26,888.54 × 10,986.88
  4. Step 4: Simplify right side
    19,484.74x = 295,421,162.36
  5. Step 5: Solve for x
    x = 295,421,162.36/19,484.74
  6. Step 6: Final answer
    x = 15,161.67

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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.