Home / 18,686,800.20-28,030,200.30-7,900,516.20

Finding the Fourth Proportional to 18,686,800.20, 28,030,200.30 and 7,900,516.20

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Solution

The fourth proportional to 18,686,800.20, 28,030,200.30 and 7,900,516.20 is: 11,850,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,800.20 : 28,030,200.30 = 7,900,516.20 : x
  2. Step 2: Convert to fraction form
    18,686,800.20/28,030,200.30 = 7,900,516.20/x
  3. Step 3: Cross multiply
    18,686,800.20x = 28,030,200.30 × 7,900,516.20
  4. Step 4: Simplify right side
    18,686,800.20x = 221,453,051,559,394.88
  5. Step 5: Solve for x
    x = 221,453,051,559,394.88/18,686,800.20
  6. Step 6: Final answer
    x = 11,850,774.30

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Similar ratio
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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.