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Finding the Fourth Proportional to 303,603.76, 418,979.26 and 167,637.96

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Solution

The fourth proportional to 303,603.76, 418,979.26 and 167,637.96 is: 231,343.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,603.76 : 418,979.26 = 167,637.96 : x
  2. Step 2: Convert to fraction form
    303,603.76/418,979.26 = 167,637.96/x
  3. Step 3: Cross multiply
    303,603.76x = 418,979.26 × 167,637.96
  4. Step 4: Simplify right side
    303,603.76x = 70,236,828,428.71
  5. Step 5: Solve for x
    x = 70,236,828,428.71/303,603.76
  6. Step 6: Final answer
    x = 231,343.74

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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.