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Finding the Fourth Proportional to 218,717.64, 328,076.64 and 60,950.28

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Solution

The fourth proportional to 218,717.64, 328,076.64 and 60,950.28 is: 91,425.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,717.64 : 328,076.64 = 60,950.28 : x
  2. Step 2: Convert to fraction form
    218,717.64/328,076.64 = 60,950.28/x
  3. Step 3: Cross multiply
    218,717.64x = 328,076.64 × 60,950.28
  4. Step 4: Simplify right side
    218,717.64x = 19,996,363,069.46
  5. Step 5: Solve for x
    x = 19,996,363,069.46/218,717.64
  6. Step 6: Final answer
    x = 91,425.47

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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.