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Finding the Fourth Proportional to 79,291.40, 118,957.35 and 55,963.40

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Solution

The fourth proportional to 79,291.40, 118,957.35 and 55,963.40 is: 83,959.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,291.40 : 118,957.35 = 55,963.40 : x
  2. Step 2: Convert to fraction form
    79,291.40/118,957.35 = 55,963.40/x
  3. Step 3: Cross multiply
    79,291.40x = 118,957.35 × 55,963.40
  4. Step 4: Simplify right side
    79,291.40x = 6,657,257,760.99
  5. Step 5: Solve for x
    x = 6,657,257,760.99/79,291.40
  6. Step 6: Final answer
    x = 83,959.39

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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.