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Finding the Fourth Proportional to 32,120.40, 48,187.80 and 9,934.80

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Solution

The fourth proportional to 32,120.40, 48,187.80 and 9,934.80 is: 14,904.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,120.40 : 48,187.80 = 9,934.80 : x
  2. Step 2: Convert to fraction form
    32,120.40/48,187.80 = 9,934.80/x
  3. Step 3: Cross multiply
    32,120.40x = 48,187.80 × 9,934.80
  4. Step 4: Simplify right side
    32,120.40x = 478,736,155.44
  5. Step 5: Solve for x
    x = 478,736,155.44/32,120.40
  6. Step 6: Final answer
    x = 14,904.43

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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.