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Finding the Fourth Proportional to 84,732, 127,117.53 and 29,328

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Solution

The fourth proportional to 84,732, 127,117.53 and 29,328 is: 43,998.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,732 : 127,117.53 = 29,328 : x
  2. Step 2: Convert to fraction form
    84,732/127,117.53 = 29,328/x
  3. Step 3: Cross multiply
    84,732x = 127,117.53 × 29,328
  4. Step 4: Simplify right side
    84,732x = 3,728,102,919.84
  5. Step 5: Solve for x
    x = 3,728,102,919.84/84,732
  6. Step 6: Final answer
    x = 43,998.76

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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.