Home / 66,128,531.30-99,193,113.77-20,070,800.30

Finding the Fourth Proportional to 66,128,531.30, 99,193,113.77 and 20,070,800.30

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Solution

The fourth proportional to 66,128,531.30, 99,193,113.77 and 20,070,800.30 is: 30,106,296.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,128,531.30 : 99,193,113.77 = 20,070,800.30 : x
  2. Step 2: Convert to fraction form
    66,128,531.30/99,193,113.77 = 20,070,800.30/x
  3. Step 3: Cross multiply
    66,128,531.30x = 99,193,113.77 × 20,070,800.30
  4. Step 4: Simplify right side
    66,128,531.30x = 1,990,885,177,612,850
  5. Step 5: Solve for x
    x = 1,990,885,177,612,850/66,128,531.30
  6. Step 6: Final answer
    x = 30,106,296.61

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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.