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Finding the Fourth Proportional to 72,390.48, 108,557.64 and 24,996.96

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Solution

The fourth proportional to 72,390.48, 108,557.64 and 24,996.96 is: 37,485.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,390.48 : 108,557.64 = 24,996.96 : x
  2. Step 2: Convert to fraction form
    72,390.48/108,557.64 = 24,996.96/x
  3. Step 3: Cross multiply
    72,390.48x = 108,557.64 × 24,996.96
  4. Step 4: Simplify right side
    72,390.48x = 2,713,610,984.77
  5. Step 5: Solve for x
    x = 2,713,610,984.77/72,390.48
  6. Step 6: Final answer
    x = 37,485.74

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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.