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Finding the Fourth Proportional to 48,999.40, 73,499.10 and 21,351.40

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Solution

The fourth proportional to 48,999.40, 73,499.10 and 21,351.40 is: 32,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,999.40 : 73,499.10 = 21,351.40 : x
  2. Step 2: Convert to fraction form
    48,999.40/73,499.10 = 21,351.40/x
  3. Step 3: Cross multiply
    48,999.40x = 73,499.10 × 21,351.40
  4. Step 4: Simplify right side
    48,999.40x = 1,569,308,683.74
  5. Step 5: Solve for x
    x = 1,569,308,683.74/48,999.40
  6. Step 6: Final answer
    x = 32,027.10

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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.