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Finding the Fourth Proportional to 448,420,843.20, 672,631,264.80 and 448,420,843.20

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Solution

The fourth proportional to 448,420,843.20, 672,631,264.80 and 448,420,843.20 is: 672,631,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,420,843.20 : 672,631,264.80 = 448,420,843.20 : x
  2. Step 2: Convert to fraction form
    448,420,843.20/672,631,264.80 = 448,420,843.20/x
  3. Step 3: Cross multiply
    448,420,843.20x = 672,631,264.80 × 448,420,843.20
  4. Step 4: Simplify right side
    448,420,843.20x = 301,621,878,924,298,432
  5. Step 5: Solve for x
    x = 301,621,878,924,298,432/448,420,843.20
  6. Step 6: Final answer
    x = 672,631,264.80

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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.