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Finding the Fourth Proportional to 153,956.70, 230,819.85 and 83,915.10

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Solution

The fourth proportional to 153,956.70, 230,819.85 and 83,915.10 is: 125,809.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,956.70 : 230,819.85 = 83,915.10 : x
  2. Step 2: Convert to fraction form
    153,956.70/230,819.85 = 83,915.10/x
  3. Step 3: Cross multiply
    153,956.70x = 230,819.85 × 83,915.10
  4. Step 4: Simplify right side
    153,956.70x = 19,369,270,794.74
  5. Step 5: Solve for x
    x = 19,369,270,794.74/153,956.70
  6. Step 6: Final answer
    x = 125,809.86

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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.