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Finding the Fourth Proportional to 45,342,341.20, 68,013,511.80 and 45,342,341.20

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Solution

The fourth proportional to 45,342,341.20, 68,013,511.80 and 45,342,341.20 is: 68,013,511.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,342,341.20 : 68,013,511.80 = 45,342,341.20 : x
  2. Step 2: Convert to fraction form
    45,342,341.20/68,013,511.80 = 45,342,341.20/x
  3. Step 3: Cross multiply
    45,342,341.20x = 68,013,511.80 × 45,342,341.20
  4. Step 4: Simplify right side
    45,342,341.20x = 3,083,891,858,245,826
  5. Step 5: Solve for x
    x = 3,083,891,858,245,826/45,342,341.20
  6. Step 6: Final answer
    x = 68,013,511.80

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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.