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Finding the Fourth Proportional to 48,748.70, 73,123.05 and 11,812.70

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Solution

The fourth proportional to 48,748.70, 73,123.05 and 11,812.70 is: 17,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,748.70 : 73,123.05 = 11,812.70 : x
  2. Step 2: Convert to fraction form
    48,748.70/73,123.05 = 11,812.70/x
  3. Step 3: Cross multiply
    48,748.70x = 73,123.05 × 11,812.70
  4. Step 4: Simplify right side
    48,748.70x = 863,780,652.74
  5. Step 5: Solve for x
    x = 863,780,652.74/48,748.70
  6. Step 6: Final answer
    x = 17,719.05

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1.5x scale

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.