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Finding the Fourth Proportional to 76,328.80, 114,493.20 and 48,335.20

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Solution

The fourth proportional to 76,328.80, 114,493.20 and 48,335.20 is: 72,502.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,328.80 : 114,493.20 = 48,335.20 : x
  2. Step 2: Convert to fraction form
    76,328.80/114,493.20 = 48,335.20/x
  3. Step 3: Cross multiply
    76,328.80x = 114,493.20 × 48,335.20
  4. Step 4: Simplify right side
    76,328.80x = 5,534,051,720.64
  5. Step 5: Solve for x
    x = 5,534,051,720.64/76,328.80
  6. Step 6: Final answer
    x = 72,502.80

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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.