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Finding the Fourth Proportional to 403,620.03, 605,133.58 and 193,405.59

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Solution

The fourth proportional to 403,620.03, 605,133.58 and 193,405.59 is: 289,966.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,620.03 : 605,133.58 = 193,405.59 : x
  2. Step 2: Convert to fraction form
    403,620.03/605,133.58 = 193,405.59/x
  3. Step 3: Cross multiply
    403,620.03x = 605,133.58 × 193,405.59
  4. Step 4: Simplify right side
    403,620.03x = 117,036,217,068.71
  5. Step 5: Solve for x
    x = 117,036,217,068.71/403,620.03
  6. Step 6: Final answer
    x = 289,966.33

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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.