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Finding the Fourth Proportional to 78,859.44, 118,225.20 and 53,836.44

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Solution

The fourth proportional to 78,859.44, 118,225.20 and 53,836.44 is: 80,711.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859.44 : 118,225.20 = 53,836.44 : x
  2. Step 2: Convert to fraction form
    78,859.44/118,225.20 = 53,836.44/x
  3. Step 3: Cross multiply
    78,859.44x = 118,225.20 × 53,836.44
  4. Step 4: Simplify right side
    78,859.44x = 6,364,823,886.29
  5. Step 5: Solve for x
    x = 6,364,823,886.29/78,859.44
  6. Step 6: Final answer
    x = 80,711.00

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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.