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Finding the Fourth Proportional to 70,595.93, 105,897.54 and 18,005.87

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Solution

The fourth proportional to 70,595.93, 105,897.54 and 18,005.87 is: 27,009.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,595.93 : 105,897.54 = 18,005.87 : x
  2. Step 2: Convert to fraction form
    70,595.93/105,897.54 = 18,005.87/x
  3. Step 3: Cross multiply
    70,595.93x = 105,897.54 × 18,005.87
  4. Step 4: Simplify right side
    70,595.93x = 1,906,777,338.56
  5. Step 5: Solve for x
    x = 1,906,777,338.56/70,595.93
  6. Step 6: Final answer
    x = 27,009.73

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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.