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Finding the Fourth Proportional to 315,915.30, 473,956.04 and 113,531.85

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Solution

The fourth proportional to 315,915.30, 473,956.04 and 113,531.85 is: 170,327.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,915.30 : 473,956.04 = 113,531.85 : x
  2. Step 2: Convert to fraction form
    315,915.30/473,956.04 = 113,531.85/x
  3. Step 3: Cross multiply
    315,915.30x = 473,956.04 × 113,531.85
  4. Step 4: Simplify right side
    315,915.30x = 53,809,106,039.87
  5. Step 5: Solve for x
    x = 53,809,106,039.87/315,915.30
  6. Step 6: Final answer
    x = 170,327.64

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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.