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Finding the Fourth Proportional to 72,588.68, 108,913.83 and 35,176.60

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Solution

The fourth proportional to 72,588.68, 108,913.83 and 35,176.60 is: 52,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,588.68 : 108,913.83 = 35,176.60 : x
  2. Step 2: Convert to fraction form
    72,588.68/108,913.83 = 35,176.60/x
  3. Step 3: Cross multiply
    72,588.68x = 108,913.83 × 35,176.60
  4. Step 4: Simplify right side
    72,588.68x = 3,831,218,232.38
  5. Step 5: Solve for x
    x = 3,831,218,232.38/72,588.68
  6. Step 6: Final answer
    x = 52,779.83

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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.