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Finding the Fourth Proportional to 393,582.40, 590,507.52 and 127,353.76

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Solution

The fourth proportional to 393,582.40, 590,507.52 and 127,353.76 is: 191,073.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,582.40 : 590,507.52 = 127,353.76 : x
  2. Step 2: Convert to fraction form
    393,582.40/590,507.52 = 127,353.76/x
  3. Step 3: Cross multiply
    393,582.40x = 590,507.52 × 127,353.76
  4. Step 4: Simplify right side
    393,582.40x = 75,203,352,980.28
  5. Step 5: Solve for x
    x = 75,203,352,980.28/393,582.40
  6. Step 6: Final answer
    x = 191,073.97

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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.