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Finding the Fourth Proportional to 621,147.24, 930,770.51 and 417,991.01

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Solution

The fourth proportional to 621,147.24, 930,770.51 and 417,991.01 is: 626,346.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,147.24 : 930,770.51 = 417,991.01 : x
  2. Step 2: Convert to fraction form
    621,147.24/930,770.51 = 417,991.01/x
  3. Step 3: Cross multiply
    621,147.24x = 930,770.51 × 417,991.01
  4. Step 4: Simplify right side
    621,147.24x = 389,053,698,809.31
  5. Step 5: Solve for x
    x = 389,053,698,809.31/621,147.24
  6. Step 6: Final answer
    x = 626,346.98

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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.