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Finding the Fourth Proportional to 393,622.10, 589,671.93 and 329,683.03

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Solution

The fourth proportional to 393,622.10, 589,671.93 and 329,683.03 is: 493,886.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,622.10 : 589,671.93 = 329,683.03 : x
  2. Step 2: Convert to fraction form
    393,622.10/589,671.93 = 329,683.03/x
  3. Step 3: Cross multiply
    393,622.10x = 589,671.93 × 329,683.03
  4. Step 4: Simplify right side
    393,622.10x = 194,404,828,350.48
  5. Step 5: Solve for x
    x = 194,404,828,350.48/393,622.10
  6. Step 6: Final answer
    x = 493,886.98

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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.