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Finding the Fourth Proportional to 374,990.19, 517,473.69 and 213,897.39

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Solution

The fourth proportional to 374,990.19, 517,473.69 and 213,897.39 is: 295,171.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,990.19 : 517,473.69 = 213,897.39 : x
  2. Step 2: Convert to fraction form
    374,990.19/517,473.69 = 213,897.39/x
  3. Step 3: Cross multiply
    374,990.19x = 517,473.69 × 213,897.39
  4. Step 4: Simplify right side
    374,990.19x = 110,686,271,684.67
  5. Step 5: Solve for x
    x = 110,686,271,684.67/374,990.19
  6. Step 6: Final answer
    x = 295,171.11

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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.