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Finding the Fourth Proportional to 12,774,858,999.90, 19,162,288,499.85 and 12,774,858,999.90

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Solution

The fourth proportional to 12,774,858,999.90, 19,162,288,499.85 and 12,774,858,999.90 is: 19,162,288,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774,858,999.90 : 19,162,288,499.85 = 12,774,858,999.90 : x
  2. Step 2: Convert to fraction form
    12,774,858,999.90/19,162,288,499.85 = 12,774,858,999.90/x
  3. Step 3: Cross multiply
    12,774,858,999.90x = 19,162,288,499.85 × 12,774,858,999.90
  4. Step 4: Simplify right side
    12,774,858,999.90x = 244,795,533,700,989,026,304
  5. Step 5: Solve for x
    x = 244,795,533,700,989,026,304/12,774,858,999.90
  6. Step 6: Final answer
    x = 19,162,288,499.85

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1.5x scale

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.