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Finding the Fourth Proportional to 79,113.54, 109,155.10 and 45,109.63

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Solution

The fourth proportional to 79,113.54, 109,155.10 and 45,109.63 is: 62,238.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,113.54 : 109,155.10 = 45,109.63 : x
  2. Step 2: Convert to fraction form
    79,113.54/109,155.10 = 45,109.63/x
  3. Step 3: Cross multiply
    79,113.54x = 109,155.10 × 45,109.63
  4. Step 4: Simplify right side
    79,113.54x = 4,923,945,675.18
  5. Step 5: Solve for x
    x = 4,923,945,675.18/79,113.54
  6. Step 6: Final answer
    x = 62,238.98

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