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Finding the Fourth Proportional to 48,424.48, 72,631.28 and 13,369.12

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Solution

The fourth proportional to 48,424.48, 72,631.28 and 13,369.12 is: 20,052.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,424.48 : 72,631.28 = 13,369.12 : x
  2. Step 2: Convert to fraction form
    48,424.48/72,631.28 = 13,369.12/x
  3. Step 3: Cross multiply
    48,424.48x = 72,631.28 × 13,369.12
  4. Step 4: Simplify right side
    48,424.48x = 971,016,298.07
  5. Step 5: Solve for x
    x = 971,016,298.07/48,424.48
  6. Step 6: Final answer
    x = 20,052.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.