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Finding the Fourth Proportional to 209,916,288,745.70, 314,874,433,118.55 and 209,916,288,745.70

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Solution

The fourth proportional to 209,916,288,745.70, 314,874,433,118.55 and 209,916,288,745.70 is: 314,874,433,118.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,916,288,745.70 : 314,874,433,118.55 = 209,916,288,745.70 : x
  2. Step 2: Convert to fraction form
    209,916,288,745.70/314,874,433,118.55 = 209,916,288,745.70/x
  3. Step 3: Cross multiply
    209,916,288,745.70x = 314,874,433,118.55 × 209,916,288,745.70
  4. Step 4: Simplify right side
    209,916,288,745.70x = 66,097,272,421,152,144,228,352
  5. Step 5: Solve for x
    x = 66,097,272,421,152,144,228,352/209,916,288,745.70
  6. Step 6: Final answer
    x = 314,874,433,118.55

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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.