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Finding the Fourth Proportional to 626,583.46, 864,662.79 and 354,645.51

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Solution

The fourth proportional to 626,583.46, 864,662.79 and 354,645.51 is: 489,398.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,583.46 : 864,662.79 = 354,645.51 : x
  2. Step 2: Convert to fraction form
    626,583.46/864,662.79 = 354,645.51/x
  3. Step 3: Cross multiply
    626,583.46x = 864,662.79 × 354,645.51
  4. Step 4: Simplify right side
    626,583.46x = 306,648,777,467.49
  5. Step 5: Solve for x
    x = 306,648,777,467.49/626,583.46
  6. Step 6: Final answer
    x = 489,398.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.