Home / 28,156,185-38,855,535.30-15,279,129

Finding the Fourth Proportional to 28,156,185, 38,855,535.30 and 15,279,129

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Solution

The fourth proportional to 28,156,185, 38,855,535.30 and 15,279,129 is: 21,085,198.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156,185 : 38,855,535.30 = 15,279,129 : x
  2. Step 2: Convert to fraction form
    28,156,185/38,855,535.30 = 15,279,129/x
  3. Step 3: Cross multiply
    28,156,185x = 38,855,535.30 × 15,279,129
  4. Step 4: Simplify right side
    28,156,185x = 593,678,736,212,753.62
  5. Step 5: Solve for x
    x = 593,678,736,212,753.62/28,156,185
  6. Step 6: Final answer
    x = 21,085,198.02

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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.