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Finding the Fourth Proportional to 628,885,816.40, 943,328,724.60 and 628,885,816.40

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Solution

The fourth proportional to 628,885,816.40, 943,328,724.60 and 628,885,816.40 is: 943,328,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,885,816.40 : 943,328,724.60 = 628,885,816.40 : x
  2. Step 2: Convert to fraction form
    628,885,816.40/943,328,724.60 = 628,885,816.40/x
  3. Step 3: Cross multiply
    628,885,816.40x = 943,328,724.60 × 628,885,816.40
  4. Step 4: Simplify right side
    628,885,816.40x = 593,246,055,103,641,728
  5. Step 5: Solve for x
    x = 593,246,055,103,641,728/628,885,816.40
  6. Step 6: Final answer
    x = 943,328,724.60

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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.