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Finding the Fourth Proportional to 68,698,983.80, 103,048,475.70 and 59,345,622.20

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Solution

The fourth proportional to 68,698,983.80, 103,048,475.70 and 59,345,622.20 is: 89,018,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,698,983.80 : 103,048,475.70 = 59,345,622.20 : x
  2. Step 2: Convert to fraction form
    68,698,983.80/103,048,475.70 = 59,345,622.20/x
  3. Step 3: Cross multiply
    68,698,983.80x = 103,048,475.70 × 59,345,622.20
  4. Step 4: Simplify right side
    68,698,983.80x = 6,115,475,907,178,081
  5. Step 5: Solve for x
    x = 6,115,475,907,178,081/68,698,983.80
  6. Step 6: Final answer
    x = 89,018,433.30

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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.