Home / 66,199,618.80-99,299,428.20-20,761,340.40

Finding the Fourth Proportional to 66,199,618.80, 99,299,428.20 and 20,761,340.40

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Solution

The fourth proportional to 66,199,618.80, 99,299,428.20 and 20,761,340.40 is: 31,142,010.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,199,618.80 : 99,299,428.20 = 20,761,340.40 : x
  2. Step 2: Convert to fraction form
    66,199,618.80/99,299,428.20 = 20,761,340.40/x
  3. Step 3: Cross multiply
    66,199,618.80x = 99,299,428.20 × 20,761,340.40
  4. Step 4: Simplify right side
    66,199,618.80x = 2,061,589,230,385,559.25
  5. Step 5: Solve for x
    x = 2,061,589,230,385,559.25/66,199,618.80
  6. Step 6: Final answer
    x = 31,142,010.60

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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.