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Finding the Fourth Proportional to 353,921.40, 530,857.80 and 114,031.80

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Solution

The fourth proportional to 353,921.40, 530,857.80 and 114,031.80 is: 171,039.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,921.40 : 530,857.80 = 114,031.80 : x
  2. Step 2: Convert to fraction form
    353,921.40/530,857.80 = 114,031.80/x
  3. Step 3: Cross multiply
    353,921.40x = 530,857.80 × 114,031.80
  4. Step 4: Simplify right side
    353,921.40x = 60,534,670,478.04
  5. Step 5: Solve for x
    x = 60,534,670,478.04/353,921.40
  6. Step 6: Final answer
    x = 171,039.87

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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.