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Finding the Fourth Proportional to 103,976.70, 155,673.45 and 101,060.70

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Solution

The fourth proportional to 103,976.70, 155,673.45 and 101,060.70 is: 151,307.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,976.70 : 155,673.45 = 101,060.70 : x
  2. Step 2: Convert to fraction form
    103,976.70/155,673.45 = 101,060.70/x
  3. Step 3: Cross multiply
    103,976.70x = 155,673.45 × 101,060.70
  4. Step 4: Simplify right side
    103,976.70x = 15,732,467,828.42
  5. Step 5: Solve for x
    x = 15,732,467,828.42/103,976.70
  6. Step 6: Final answer
    x = 151,307.63

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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.