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Finding the Fourth Proportional to 344,654.40, 516,981.78 and 108,015.51

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Solution

The fourth proportional to 344,654.40, 516,981.78 and 108,015.51 is: 162,023.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,654.40 : 516,981.78 = 108,015.51 : x
  2. Step 2: Convert to fraction form
    344,654.40/516,981.78 = 108,015.51/x
  3. Step 3: Cross multiply
    344,654.40x = 516,981.78 × 108,015.51
  4. Step 4: Simplify right side
    344,654.40x = 55,842,050,627.41
  5. Step 5: Solve for x
    x = 55,842,050,627.41/344,654.40
  6. Step 6: Final answer
    x = 162,023.32

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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.