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Finding the Fourth Proportional to 10,365.70, 15,548.55 and 4,817.20

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Solution

The fourth proportional to 10,365.70, 15,548.55 and 4,817.20 is: 7,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,365.70 : 15,548.55 = 4,817.20 : x
  2. Step 2: Convert to fraction form
    10,365.70/15,548.55 = 4,817.20/x
  3. Step 3: Cross multiply
    10,365.70x = 15,548.55 × 4,817.20
  4. Step 4: Simplify right side
    10,365.70x = 74,900,475.06
  5. Step 5: Solve for x
    x = 74,900,475.06/10,365.70
  6. Step 6: Final answer
    x = 7,225.80

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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.