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Finding the Fourth Proportional to 101,873.53, 140,587.03 and 56,554.43

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Solution

The fourth proportional to 101,873.53, 140,587.03 and 56,554.43 is: 78,045.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,873.53 : 140,587.03 = 56,554.43 : x
  2. Step 2: Convert to fraction form
    101,873.53/140,587.03 = 56,554.43/x
  3. Step 3: Cross multiply
    101,873.53x = 140,587.03 × 56,554.43
  4. Step 4: Simplify right side
    101,873.53x = 7,950,819,064.27
  5. Step 5: Solve for x
    x = 7,950,819,064.27/101,873.53
  6. Step 6: Final answer
    x = 78,045.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.