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Finding the Fourth Proportional to 78,469.79, 108,298.28 and 44,483.81

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Solution

The fourth proportional to 78,469.79, 108,298.28 and 44,483.81 is: 61,393.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,469.79 : 108,298.28 = 44,483.81 : x
  2. Step 2: Convert to fraction form
    78,469.79/108,298.28 = 44,483.81/x
  3. Step 3: Cross multiply
    78,469.79x = 108,298.28 × 44,483.81
  4. Step 4: Simplify right side
    78,469.79x = 4,817,519,888.43
  5. Step 5: Solve for x
    x = 4,817,519,888.43/78,469.79
  6. Step 6: Final answer
    x = 61,393.31

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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.