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Finding the Fourth Proportional to 10,859.18, 16,290.95 and 4,619.16

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Solution

The fourth proportional to 10,859.18, 16,290.95 and 4,619.16 is: 6,929.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.18 : 16,290.95 = 4,619.16 : x
  2. Step 2: Convert to fraction form
    10,859.18/16,290.95 = 4,619.16/x
  3. Step 3: Cross multiply
    10,859.18x = 16,290.95 × 4,619.16
  4. Step 4: Simplify right side
    10,859.18x = 75,250,481.51
  5. Step 5: Solve for x
    x = 75,250,481.51/10,859.18
  6. Step 6: Final answer
    x = 6,929.67

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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.