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Finding the Fourth Proportional to 139,447.65, 209,185.29 and 44,654.04

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Solution

The fourth proportional to 139,447.65, 209,185.29 and 44,654.04 is: 66,985.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,447.65 : 209,185.29 = 44,654.04 : x
  2. Step 2: Convert to fraction form
    139,447.65/209,185.29 = 44,654.04/x
  3. Step 3: Cross multiply
    139,447.65x = 209,185.29 × 44,654.04
  4. Step 4: Simplify right side
    139,447.65x = 9,340,968,307.07
  5. Step 5: Solve for x
    x = 9,340,968,307.07/139,447.65
  6. Step 6: Final answer
    x = 66,985.48

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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.