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Finding the Fourth Proportional to 15,787.40, 23,681.10 and 15,528.20

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Solution

The fourth proportional to 15,787.40, 23,681.10 and 15,528.20 is: 23,292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,787.40 : 23,681.10 = 15,528.20 : x
  2. Step 2: Convert to fraction form
    15,787.40/23,681.10 = 15,528.20/x
  3. Step 3: Cross multiply
    15,787.40x = 23,681.10 × 15,528.20
  4. Step 4: Simplify right side
    15,787.40x = 367,724,857.02
  5. Step 5: Solve for x
    x = 367,724,857.02/15,787.40
  6. Step 6: Final answer
    x = 23,292.30

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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.