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Finding the Fourth Proportional to 620,617.01, 930,855.80 and 171,401.74

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Solution

The fourth proportional to 620,617.01, 930,855.80 and 171,401.74 is: 257,083.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,617.01 : 930,855.80 = 171,401.74 : x
  2. Step 2: Convert to fraction form
    620,617.01/930,855.80 = 171,401.74/x
  3. Step 3: Cross multiply
    620,617.01x = 930,855.80 × 171,401.74
  4. Step 4: Simplify right side
    620,617.01x = 159,550,303,809.09
  5. Step 5: Solve for x
    x = 159,550,303,809.09/620,617.01
  6. Step 6: Final answer
    x = 257,083.36

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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.