Home / 28,162,530.15-38,935,367.06-20,808,764.79

Finding the Fourth Proportional to 28,162,530.15, 38,935,367.06 and 20,808,764.79

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Solution

The fourth proportional to 28,162,530.15, 38,935,367.06 and 20,808,764.79 is: 28,768,611.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162,530.15 : 38,935,367.06 = 20,808,764.79 : x
  2. Step 2: Convert to fraction form
    28,162,530.15/38,935,367.06 = 20,808,764.79/x
  3. Step 3: Cross multiply
    28,162,530.15x = 38,935,367.06 × 20,808,764.79
  4. Step 4: Simplify right side
    28,162,530.15x = 810,196,895,059,810
  5. Step 5: Solve for x
    x = 810,196,895,059,810/28,162,530.15
  6. Step 6: Final answer
    x = 28,768,611.72

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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.