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Finding the Fourth Proportional to 12,432,821,855.48, 18,649,232,783.21 and 12,432,821,855.48

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Solution

The fourth proportional to 12,432,821,855.48, 18,649,232,783.21 and 12,432,821,855.48 is: 18,649,232,783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432,821,855.48 : 18,649,232,783.21 = 12,432,821,855.48 : x
  2. Step 2: Convert to fraction form
    12,432,821,855.48/18,649,232,783.21 = 12,432,821,855.48/x
  3. Step 3: Cross multiply
    12,432,821,855.48x = 18,649,232,783.21 × 12,432,821,855.48
  4. Step 4: Simplify right side
    12,432,821,855.48x = 231,862,588,934,971,457,536
  5. Step 5: Solve for x
    x = 231,862,588,934,971,457,536/12,432,821,855.48
  6. Step 6: Final answer
    x = 18,649,232,783.21

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Double scale
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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.