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Finding the Fourth Proportional to 82,757.49, 124,038.99 and 38,290.32

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Solution

The fourth proportional to 82,757.49, 124,038.99 and 38,290.32 is: 57,390.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,757.49 : 124,038.99 = 38,290.32 : x
  2. Step 2: Convert to fraction form
    82,757.49/124,038.99 = 38,290.32/x
  3. Step 3: Cross multiply
    82,757.49x = 124,038.99 × 38,290.32
  4. Step 4: Simplify right side
    82,757.49x = 4,749,492,619.58
  5. Step 5: Solve for x
    x = 4,749,492,619.58/82,757.49
  6. Step 6: Final answer
    x = 57,390.49

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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.