Home / 18,904,321,640.40-28,356,482,460.60-9,108,801,128.40

Finding the Fourth Proportional to 18,904,321,640.40, 28,356,482,460.60 and 9,108,801,128.40

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Solution

The fourth proportional to 18,904,321,640.40, 28,356,482,460.60 and 9,108,801,128.40 is: 13,663,201,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904,321,640.40 : 28,356,482,460.60 = 9,108,801,128.40 : x
  2. Step 2: Convert to fraction form
    18,904,321,640.40/28,356,482,460.60 = 9,108,801,128.40/x
  3. Step 3: Cross multiply
    18,904,321,640.40x = 28,356,482,460.60 × 9,108,801,128.40
  4. Step 4: Simplify right side
    18,904,321,640.40x = 258,293,559,434,568,073,216
  5. Step 5: Solve for x
    x = 258,293,559,434,568,073,216/18,904,321,640.40
  6. Step 6: Final answer
    x = 13,663,201,692.60

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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.