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Finding the Fourth Proportional to 21,000,846,793.60, 31,501,270,190.40 and 21,000,846,793.60

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Solution

The fourth proportional to 21,000,846,793.60, 31,501,270,190.40 and 21,000,846,793.60 is: 31,501,270,190.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,846,793.60 : 31,501,270,190.40 = 21,000,846,793.60 : x
  2. Step 2: Convert to fraction form
    21,000,846,793.60/31,501,270,190.40 = 21,000,846,793.60/x
  3. Step 3: Cross multiply
    21,000,846,793.60x = 31,501,270,190.40 × 21,000,846,793.60
  4. Step 4: Simplify right side
    21,000,846,793.60x = 661,553,349,072,389,144,576
  5. Step 5: Solve for x
    x = 661,553,349,072,389,144,576/21,000,846,793.60
  6. Step 6: Final answer
    x = 31,501,270,190.40

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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.