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Finding the Fourth Proportional to 20,997,955,364.80, 31,496,933,047.20 and 20,997,955,364.80

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Solution

The fourth proportional to 20,997,955,364.80, 31,496,933,047.20 and 20,997,955,364.80 is: 31,496,933,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997,955,364.80 : 31,496,933,047.20 = 20,997,955,364.80 : x
  2. Step 2: Convert to fraction form
    20,997,955,364.80/31,496,933,047.20 = 20,997,955,364.80/x
  3. Step 3: Cross multiply
    20,997,955,364.80x = 31,496,933,047.20 × 20,997,955,364.80
  4. Step 4: Simplify right side
    20,997,955,364.80x = 661,371,194,253,199,671,296
  5. Step 5: Solve for x
    x = 661,371,194,253,199,671,296/20,997,955,364.80
  6. Step 6: Final answer
    x = 31,496,933,047.20

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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.