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Finding the Fourth Proportional to 48,392.40, 72,492.60 and 42,619.60

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Solution

The fourth proportional to 48,392.40, 72,492.60 and 42,619.60 is: 63,844.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,392.40 : 72,492.60 = 42,619.60 : x
  2. Step 2: Convert to fraction form
    48,392.40/72,492.60 = 42,619.60/x
  3. Step 3: Cross multiply
    48,392.40x = 72,492.60 × 42,619.60
  4. Step 4: Simplify right side
    48,392.40x = 3,089,605,614.96
  5. Step 5: Solve for x
    x = 3,089,605,614.96/48,392.40
  6. Step 6: Final answer
    x = 63,844.85

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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.