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Finding the Fourth Proportional to 30,705.25, 42,373.25 and 17,457.25

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Solution

The fourth proportional to 30,705.25, 42,373.25 and 17,457.25 is: 24,091.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,705.25 : 42,373.25 = 17,457.25 : x
  2. Step 2: Convert to fraction form
    30,705.25/42,373.25 = 17,457.25/x
  3. Step 3: Cross multiply
    30,705.25x = 42,373.25 × 17,457.25
  4. Step 4: Simplify right side
    30,705.25x = 739,720,418.56
  5. Step 5: Solve for x
    x = 739,720,418.56/30,705.25
  6. Step 6: Final answer
    x = 24,091.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.