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Finding the Fourth Proportional to 30,645.49, 42,291.35 and 17,034.81

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Solution

The fourth proportional to 30,645.49, 42,291.35 and 17,034.81 is: 23,508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.49 : 42,291.35 = 17,034.81 : x
  2. Step 2: Convert to fraction form
    30,645.49/42,291.35 = 17,034.81/x
  3. Step 3: Cross multiply
    30,645.49x = 42,291.35 × 17,034.81
  4. Step 4: Simplify right side
    30,645.49x = 720,425,111.89
  5. Step 5: Solve for x
    x = 720,425,111.89/30,645.49
  6. Step 6: Final answer
    x = 23,508.36

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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.