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Finding the Fourth Proportional to 72,390.40, 108,553.20 and 32,927.20

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Solution

The fourth proportional to 72,390.40, 108,553.20 and 32,927.20 is: 49,376.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,390.40 : 108,553.20 = 32,927.20 : x
  2. Step 2: Convert to fraction form
    72,390.40/108,553.20 = 32,927.20/x
  3. Step 3: Cross multiply
    72,390.40x = 108,553.20 × 32,927.20
  4. Step 4: Simplify right side
    72,390.40x = 3,574,352,927.04
  5. Step 5: Solve for x
    x = 3,574,352,927.04/72,390.40
  6. Step 6: Final answer
    x = 49,376.06

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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.