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Finding the Fourth Proportional to 448,457,519.40, 671,410,820.70 and 448,457,519.40

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Solution

The fourth proportional to 448,457,519.40, 671,410,820.70 and 448,457,519.40 is: 671,410,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,457,519.40 : 671,410,820.70 = 448,457,519.40 : x
  2. Step 2: Convert to fraction form
    448,457,519.40/671,410,820.70 = 448,457,519.40/x
  3. Step 3: Cross multiply
    448,457,519.40x = 671,410,820.70 × 448,457,519.40
  4. Step 4: Simplify right side
    448,457,519.40x = 301,099,231,149,440,192
  5. Step 5: Solve for x
    x = 301,099,231,149,440,192/448,457,519.40
  6. Step 6: Final answer
    x = 671,410,820.70

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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.