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Finding the Fourth Proportional to 128,718,069.80, 193,077,104.70 and 128,718,069.80

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Solution

The fourth proportional to 128,718,069.80, 193,077,104.70 and 128,718,069.80 is: 193,077,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,718,069.80 : 193,077,104.70 = 128,718,069.80 : x
  2. Step 2: Convert to fraction form
    128,718,069.80/193,077,104.70 = 128,718,069.80/x
  3. Step 3: Cross multiply
    128,718,069.80x = 193,077,104.70 × 128,718,069.80
  4. Step 4: Simplify right side
    128,718,069.80x = 24,852,512,239,556,504
  5. Step 5: Solve for x
    x = 24,852,512,239,556,504/128,718,069.80
  6. Step 6: Final answer
    x = 193,077,104.70

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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.