Home / 205,180,785,999.36-307,556,372,442.24-85,866,471,077.76

Finding the Fourth Proportional to 205,180,785,999.36, 307,556,372,442.24 and 85,866,471,077.76

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Solution

The fourth proportional to 205,180,785,999.36, 307,556,372,442.24 and 85,866,471,077.76 is: 128,709,811,839.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,180,785,999.36 : 307,556,372,442.24 = 85,866,471,077.76 : x
  2. Step 2: Convert to fraction form
    205,180,785,999.36/307,556,372,442.24 = 85,866,471,077.76/x
  3. Step 3: Cross multiply
    205,180,785,999.36x = 307,556,372,442.24 × 85,866,471,077.76
  4. Step 4: Simplify right side
    205,180,785,999.36x = 26,408,780,359,092,381,155,328
  5. Step 5: Solve for x
    x = 26,408,780,359,092,381,155,328/205,180,785,999.36
  6. Step 6: Final answer
    x = 128,709,811,839.67

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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.