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Finding the Fourth Proportional to 18,740.00, 28,111.07 and 7,646.45

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Solution

The fourth proportional to 18,740.00, 28,111.07 and 7,646.45 is: 11,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.00 : 28,111.07 = 7,646.45 : x
  2. Step 2: Convert to fraction form
    18,740.00/28,111.07 = 7,646.45/x
  3. Step 3: Cross multiply
    18,740.00x = 28,111.07 × 7,646.45
  4. Step 4: Simplify right side
    18,740.00x = 214,949,712.41
  5. Step 5: Solve for x
    x = 214,949,712.41/18,740.00
  6. Step 6: Final answer
    x = 11,470.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.