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Finding the Third Proportional to 59,915,490 and 129,060,100

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Solution

The third proportional to 59,915,490 and 129,060,100 is: 278,000,053.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,915,490 : 129,060,100 = 129,060,100 : x
  2. Step 2: Convert to fraction form
    59,915,490/129,060,100 = 129,060,100/x
  3. Step 3: Cross multiply
    59,915,490x = 129,060,100 × 129,060,100
  4. Step 4: Simplify right side
    59,915,490x = 16,656,509,412,010,000
  5. Step 5: Solve for x
    x = 16,656,509,412,010,000/59,915,490
  6. Step 6: Final answer
    x = 278,000,053.28

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.