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Finding the Fourth Proportional to 73,212.40, 109,818.60 and 48,280.60

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Solution

The fourth proportional to 73,212.40, 109,818.60 and 48,280.60 is: 72,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,212.40 : 109,818.60 = 48,280.60 : x
  2. Step 2: Convert to fraction form
    73,212.40/109,818.60 = 48,280.60/x
  3. Step 3: Cross multiply
    73,212.40x = 109,818.60 × 48,280.60
  4. Step 4: Simplify right side
    73,212.40x = 5,302,107,899.16
  5. Step 5: Solve for x
    x = 5,302,107,899.16/73,212.40
  6. Step 6: Final answer
    x = 72,420.90

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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.