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Finding the Fourth Proportional to 448,212.40, 629,072 and 448,212.40

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Solution

The fourth proportional to 448,212.40, 629,072 and 448,212.40 is: 629,072.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,212.40 : 629,072 = 448,212.40 : x
  2. Step 2: Convert to fraction form
    448,212.40/629,072 = 448,212.40/x
  3. Step 3: Cross multiply
    448,212.40x = 629,072 × 448,212.40
  4. Step 4: Simplify right side
    448,212.40x = 281,957,870,892.80
  5. Step 5: Solve for x
    x = 281,957,870,892.80/448,212.40
  6. Step 6: Final answer
    x = 629,072.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.