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Finding the Fourth Proportional to 103,060.95, 154,390.09 and 71,034.33

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Solution

The fourth proportional to 103,060.95, 154,390.09 and 71,034.33 is: 106,412.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,060.95 : 154,390.09 = 71,034.33 : x
  2. Step 2: Convert to fraction form
    103,060.95/154,390.09 = 71,034.33/x
  3. Step 3: Cross multiply
    103,060.95x = 154,390.09 × 71,034.33
  4. Step 4: Simplify right side
    103,060.95x = 10,966,995,474.67
  5. Step 5: Solve for x
    x = 10,966,995,474.67/103,060.95
  6. Step 6: Final answer
    x = 106,412.72

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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.