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Finding the Fourth Proportional to 56,789.76, 85,055.04 and 48,460.80

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Solution

The fourth proportional to 56,789.76, 85,055.04 and 48,460.80 is: 72,580.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,789.76 : 85,055.04 = 48,460.80 : x
  2. Step 2: Convert to fraction form
    56,789.76/85,055.04 = 48,460.80/x
  3. Step 3: Cross multiply
    56,789.76x = 85,055.04 × 48,460.80
  4. Step 4: Simplify right side
    56,789.76x = 4,121,835,282.43
  5. Step 5: Solve for x
    x = 4,121,835,282.43/56,789.76
  6. Step 6: Final answer
    x = 72,580.61

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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.