Home / 129,290,512.82-178,424,675.64-70,556,961.06

Finding the Fourth Proportional to 129,290,512.82, 178,424,675.64 and 70,556,961.06

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Solution

The fourth proportional to 129,290,512.82, 178,424,675.64 and 70,556,961.06 is: 97,370,662.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,290,512.82 : 178,424,675.64 = 70,556,961.06 : x
  2. Step 2: Convert to fraction form
    129,290,512.82/178,424,675.64 = 70,556,961.06/x
  3. Step 3: Cross multiply
    129,290,512.82x = 178,424,675.64 × 70,556,961.06
  4. Step 4: Simplify right side
    129,290,512.82x = 12,589,102,891,274,610
  5. Step 5: Solve for x
    x = 12,589,102,891,274,610/129,290,512.82
  6. Step 6: Final answer
    x = 97,370,662.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.