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Finding the Fourth Proportional to 72,653.96, 108,763.68 and 44,485.40

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Solution

The fourth proportional to 72,653.96, 108,763.68 and 44,485.40 is: 66,595.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,653.96 : 108,763.68 = 44,485.40 : x
  2. Step 2: Convert to fraction form
    72,653.96/108,763.68 = 44,485.40/x
  3. Step 3: Cross multiply
    72,653.96x = 108,763.68 × 44,485.40
  4. Step 4: Simplify right side
    72,653.96x = 4,838,395,810.27
  5. Step 5: Solve for x
    x = 4,838,395,810.27/72,653.96
  6. Step 6: Final answer
    x = 66,595.07

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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.