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Finding the Fourth Proportional to 393,722.43, 590,677.72 and 127,483.24

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Solution

The fourth proportional to 393,722.43, 590,677.72 and 127,483.24 is: 191,255.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,722.43 : 590,677.72 = 127,483.24 : x
  2. Step 2: Convert to fraction form
    393,722.43/590,677.72 = 127,483.24/x
  3. Step 3: Cross multiply
    393,722.43x = 590,677.72 × 127,483.24
  4. Step 4: Simplify right side
    393,722.43x = 75,301,509,541.41
  5. Step 5: Solve for x
    x = 75,301,509,541.41/393,722.43
  6. Step 6: Final answer
    x = 191,255.32

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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.