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Finding the Fourth Proportional to 417,197.81, 625,820.93 and 161,031.80

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Solution

The fourth proportional to 417,197.81, 625,820.93 and 161,031.80 is: 241,557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,197.81 : 625,820.93 = 161,031.80 : x
  2. Step 2: Convert to fraction form
    417,197.81/625,820.93 = 161,031.80/x
  3. Step 3: Cross multiply
    417,197.81x = 625,820.93 × 161,031.80
  4. Step 4: Simplify right side
    417,197.81x = 100,777,070,835.57
  5. Step 5: Solve for x
    x = 100,777,070,835.57/417,197.81
  6. Step 6: Final answer
    x = 241,557.05

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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.