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Finding the Fourth Proportional to 28,539.25, 42,828.32 and 10,071.25

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Solution

The fourth proportional to 28,539.25, 42,828.32 and 10,071.25 is: 15,113.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.25 : 42,828.32 = 10,071.25 : x
  2. Step 2: Convert to fraction form
    28,539.25/42,828.32 = 10,071.25/x
  3. Step 3: Cross multiply
    28,539.25x = 42,828.32 × 10,071.25
  4. Step 4: Simplify right side
    28,539.25x = 431,334,717.80
  5. Step 5: Solve for x
    x = 431,334,717.80/28,539.25
  6. Step 6: Final answer
    x = 15,113.74

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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.