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Finding the Fourth Proportional to 393,258.90, 589,901.42 and 108,952.31

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Solution

The fourth proportional to 393,258.90, 589,901.42 and 108,952.31 is: 163,432.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,258.90 : 589,901.42 = 108,952.31 : x
  2. Step 2: Convert to fraction form
    393,258.90/589,901.42 = 108,952.31/x
  3. Step 3: Cross multiply
    393,258.90x = 589,901.42 × 108,952.31
  4. Step 4: Simplify right side
    393,258.90x = 64,271,122,381.28
  5. Step 5: Solve for x
    x = 64,271,122,381.28/393,258.90
  6. Step 6: Final answer
    x = 163,432.09

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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.