Home / 129,290,512.57-178,424,675.27-70,556,960.79

Finding the Fourth Proportional to 129,290,512.57, 178,424,675.27 and 70,556,960.79

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Solution

The fourth proportional to 129,290,512.57, 178,424,675.27 and 70,556,960.79 is: 97,370,662.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,290,512.57 : 178,424,675.27 = 70,556,960.79 : x
  2. Step 2: Convert to fraction form
    129,290,512.57/178,424,675.27 = 70,556,960.79/x
  3. Step 3: Cross multiply
    129,290,512.57x = 178,424,675.27 × 70,556,960.79
  4. Step 4: Simplify right side
    129,290,512.57x = 12,589,102,816,905,678
  5. Step 5: Solve for x
    x = 12,589,102,816,905,678/129,290,512.57
  6. Step 6: Final answer
    x = 97,370,662.14

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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.