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Finding the Fourth Proportional to 79,506.48, 109,716.62 and 45,513.84

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Solution

The fourth proportional to 79,506.48, 109,716.62 and 45,513.84 is: 62,807.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,506.48 : 109,716.62 = 45,513.84 : x
  2. Step 2: Convert to fraction form
    79,506.48/109,716.62 = 45,513.84/x
  3. Step 3: Cross multiply
    79,506.48x = 109,716.62 × 45,513.84
  4. Step 4: Simplify right side
    79,506.48x = 4,993,624,688.02
  5. Step 5: Solve for x
    x = 4,993,624,688.02/79,506.48
  6. Step 6: Final answer
    x = 62,807.77

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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.