Home / 85,603,911.44-128,378,892.53-28,082,778.80

Finding the Fourth Proportional to 85,603,911.44, 128,378,892.53 and 28,082,778.80

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Solution

The fourth proportional to 85,603,911.44, 128,378,892.53 and 28,082,778.80 is: 42,115,319.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603,911.44 : 128,378,892.53 = 28,082,778.80 : x
  2. Step 2: Convert to fraction form
    85,603,911.44/128,378,892.53 = 28,082,778.80/x
  3. Step 3: Cross multiply
    85,603,911.44x = 128,378,892.53 × 28,082,778.80
  4. Step 4: Simplify right side
    85,603,911.44x = 3,605,236,040,937,275
  5. Step 5: Solve for x
    x = 3,605,236,040,937,275/85,603,911.44
  6. Step 6: Final answer
    x = 42,115,319.04

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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.