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Finding the Fourth Proportional to 57,282.66, 79,048.59 and 31,788.93

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Solution

The fourth proportional to 57,282.66, 79,048.59 and 31,788.93 is: 43,867.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,282.66 : 79,048.59 = 31,788.93 : x
  2. Step 2: Convert to fraction form
    57,282.66/79,048.59 = 31,788.93/x
  3. Step 3: Cross multiply
    57,282.66x = 79,048.59 × 31,788.93
  4. Step 4: Simplify right side
    57,282.66x = 2,512,870,094.11
  5. Step 5: Solve for x
    x = 2,512,870,094.11/57,282.66
  6. Step 6: Final answer
    x = 43,867.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.