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Finding the Fourth Proportional to 228,491.68, 315,087.12 and 176,134.72

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Solution

The fourth proportional to 228,491.68, 315,087.12 and 176,134.72 is: 242,887.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,491.68 : 315,087.12 = 176,134.72 : x
  2. Step 2: Convert to fraction form
    228,491.68/315,087.12 = 176,134.72/x
  3. Step 3: Cross multiply
    228,491.68x = 315,087.12 × 176,134.72
  4. Step 4: Simplify right side
    228,491.68x = 55,497,781,656.81
  5. Step 5: Solve for x
    x = 55,497,781,656.81/228,491.68
  6. Step 6: Final answer
    x = 242,887.54

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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.