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Finding the Fourth Proportional to 157,797.19, 217,615.89 and 123,346.48

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Solution

The fourth proportional to 157,797.19, 217,615.89 and 123,346.48 is: 170,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,797.19 : 217,615.89 = 123,346.48 : x
  2. Step 2: Convert to fraction form
    157,797.19/217,615.89 = 123,346.48/x
  3. Step 3: Cross multiply
    157,797.19x = 217,615.89 × 123,346.48
  4. Step 4: Simplify right side
    157,797.19x = 26,842,154,023.57
  5. Step 5: Solve for x
    x = 26,842,154,023.57/157,797.19
  6. Step 6: Final answer
    x = 170,105.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.