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Finding the Fourth Proportional to 126,371,215.80, 189,556,823.70 and 126,371,215.80

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Solution

The fourth proportional to 126,371,215.80, 189,556,823.70 and 126,371,215.80 is: 189,556,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,371,215.80 : 189,556,823.70 = 126,371,215.80 : x
  2. Step 2: Convert to fraction form
    126,371,215.80/189,556,823.70 = 126,371,215.80/x
  3. Step 3: Cross multiply
    126,371,215.80x = 189,556,823.70 × 126,371,215.80
  4. Step 4: Simplify right side
    126,371,215.80x = 23,954,526,274,155,252
  5. Step 5: Solve for x
    x = 23,954,526,274,155,252/126,371,215.80
  6. Step 6: Final answer
    x = 189,556,823.70

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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.