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Finding the Fourth Proportional to 637,848,019.20, 956,772,028.80 and 637,848,019.20

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Solution

The fourth proportional to 637,848,019.20, 956,772,028.80 and 637,848,019.20 is: 956,772,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,848,019.20 : 956,772,028.80 = 637,848,019.20 : x
  2. Step 2: Convert to fraction form
    637,848,019.20/956,772,028.80 = 637,848,019.20/x
  3. Step 3: Cross multiply
    637,848,019.20x = 956,772,028.80 × 637,848,019.20
  4. Step 4: Simplify right side
    637,848,019.20x = 610,275,143,396,045,312
  5. Step 5: Solve for x
    x = 610,275,143,396,045,312/637,848,019.20
  6. Step 6: Final answer
    x = 956,772,028.80

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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.