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Finding the Fourth Proportional to 48,312.40, 72,468.60 and 44,813.20

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Solution

The fourth proportional to 48,312.40, 72,468.60 and 44,813.20 is: 67,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,312.40 : 72,468.60 = 44,813.20 : x
  2. Step 2: Convert to fraction form
    48,312.40/72,468.60 = 44,813.20/x
  3. Step 3: Cross multiply
    48,312.40x = 72,468.60 × 44,813.20
  4. Step 4: Simplify right side
    48,312.40x = 3,247,549,865.52
  5. Step 5: Solve for x
    x = 3,247,549,865.52/48,312.40
  6. Step 6: Final answer
    x = 67,219.80

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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.