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Finding the Fourth Proportional to 621,059.09, 930,924.23 and 321,237.81

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Solution

The fourth proportional to 621,059.09, 930,924.23 and 321,237.81 is: 481,513.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,059.09 : 930,924.23 = 321,237.81 : x
  2. Step 2: Convert to fraction form
    621,059.09/930,924.23 = 321,237.81/x
  3. Step 3: Cross multiply
    621,059.09x = 930,924.23 × 321,237.81
  4. Step 4: Simplify right side
    621,059.09x = 299,048,059,314.95
  5. Step 5: Solve for x
    x = 299,048,059,314.95/621,059.09
  6. Step 6: Final answer
    x = 481,513.06

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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.