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Finding the Fourth Proportional to 74,793, 103,216.29 and 40,802.04

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Solution

The fourth proportional to 74,793, 103,216.29 and 40,802.04 is: 56,307.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,793 : 103,216.29 = 40,802.04 : x
  2. Step 2: Convert to fraction form
    74,793/103,216.29 = 40,802.04/x
  3. Step 3: Cross multiply
    74,793x = 103,216.29 × 40,802.04
  4. Step 4: Simplify right side
    74,793x = 4,211,435,193.23
  5. Step 5: Solve for x
    x = 4,211,435,193.23/74,793
  6. Step 6: Final answer
    x = 56,307.88

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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.