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Finding the Fourth Proportional to 315,868.44, 473,732.88 and 91,180.04

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Solution

The fourth proportional to 315,868.44, 473,732.88 and 91,180.04 is: 136,749.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,868.44 : 473,732.88 = 91,180.04 : x
  2. Step 2: Convert to fraction form
    315,868.44/473,732.88 = 91,180.04/x
  3. Step 3: Cross multiply
    315,868.44x = 473,732.88 × 91,180.04
  4. Step 4: Simplify right side
    315,868.44x = 43,194,982,947.72
  5. Step 5: Solve for x
    x = 43,194,982,947.72/315,868.44
  6. Step 6: Final answer
    x = 136,749.92

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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.