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Finding the Fourth Proportional to 48,981.60, 73,472.40 and 12,045.60

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Solution

The fourth proportional to 48,981.60, 73,472.40 and 12,045.60 is: 18,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,981.60 : 73,472.40 = 12,045.60 : x
  2. Step 2: Convert to fraction form
    48,981.60/73,472.40 = 12,045.60/x
  3. Step 3: Cross multiply
    48,981.60x = 73,472.40 × 12,045.60
  4. Step 4: Simplify right side
    48,981.60x = 885,019,141.44
  5. Step 5: Solve for x
    x = 885,019,141.44/48,981.60
  6. Step 6: Final answer
    x = 18,068.40

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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.