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Finding the Fourth Proportional to 74,659.60, 112,021.80 and 37,723.60

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Solution

The fourth proportional to 74,659.60, 112,021.80 and 37,723.60 is: 56,601.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,659.60 : 112,021.80 = 37,723.60 : x
  2. Step 2: Convert to fraction form
    74,659.60/112,021.80 = 37,723.60/x
  3. Step 3: Cross multiply
    74,659.60x = 112,021.80 × 37,723.60
  4. Step 4: Simplify right side
    74,659.60x = 4,225,865,574.48
  5. Step 5: Solve for x
    x = 4,225,865,574.48/74,659.60
  6. Step 6: Final answer
    x = 56,601.77

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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.