Home / 28,156,185.76-38,855,536.34-15,279,129.76

Finding the Fourth Proportional to 28,156,185.76, 38,855,536.34 and 15,279,129.76

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Solution

The fourth proportional to 28,156,185.76, 38,855,536.34 and 15,279,129.76 is: 21,085,199.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156,185.76 : 38,855,536.34 = 15,279,129.76 : x
  2. Step 2: Convert to fraction form
    28,156,185.76/38,855,536.34 = 15,279,129.76/x
  3. Step 3: Cross multiply
    28,156,185.76x = 38,855,536.34 × 15,279,129.76
  4. Step 4: Simplify right side
    28,156,185.76x = 593,678,781,633,255.50
  5. Step 5: Solve for x
    x = 593,678,781,633,255.50/28,156,185.76
  6. Step 6: Final answer
    x = 21,085,199.06

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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.