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Finding the Fourth Proportional to 336,675.84, 505,013.76 and 115,061.76

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Solution

The fourth proportional to 336,675.84, 505,013.76 and 115,061.76 is: 172,592.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,675.84 : 505,013.76 = 115,061.76 : x
  2. Step 2: Convert to fraction form
    336,675.84/505,013.76 = 115,061.76/x
  3. Step 3: Cross multiply
    336,675.84x = 505,013.76 × 115,061.76
  4. Step 4: Simplify right side
    336,675.84x = 58,107,772,049.82
  5. Step 5: Solve for x
    x = 58,107,772,049.82/336,675.84
  6. Step 6: Final answer
    x = 172,592.64

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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.