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Finding the Fourth Proportional to 830,522,287.90, 1,245,783,431.85 and 830,522,287.90

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Solution

The fourth proportional to 830,522,287.90, 1,245,783,431.85 and 830,522,287.90 is: 1,245,783,431.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,522,287.90 : 1,245,783,431.85 = 830,522,287.90 : x
  2. Step 2: Convert to fraction form
    830,522,287.90/1,245,783,431.85 = 830,522,287.90/x
  3. Step 3: Cross multiply
    830,522,287.90x = 1,245,783,431.85 × 830,522,287.90
  4. Step 4: Simplify right side
    830,522,287.90x = 1,034,650,906,047,975,680
  5. Step 5: Solve for x
    x = 1,034,650,906,047,975,680/830,522,287.90
  6. Step 6: Final answer
    x = 1,245,783,431.85

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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.