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Finding the Fourth Proportional to 48,492.70, 72,739.06 and 13,432.37

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Solution

The fourth proportional to 48,492.70, 72,739.06 and 13,432.37 is: 20,148.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,492.70 : 72,739.06 = 13,432.37 : x
  2. Step 2: Convert to fraction form
    48,492.70/72,739.06 = 13,432.37/x
  3. Step 3: Cross multiply
    48,492.70x = 72,739.06 × 13,432.37
  4. Step 4: Simplify right side
    48,492.70x = 977,057,570.10
  5. Step 5: Solve for x
    x = 977,057,570.10/48,492.70
  6. Step 6: Final answer
    x = 20,148.55

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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.