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Finding the Fourth Proportional to 57,766.63, 79,717.95 and 31,270.63

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Solution

The fourth proportional to 57,766.63, 79,717.95 and 31,270.63 is: 43,153.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,766.63 : 79,717.95 = 31,270.63 : x
  2. Step 2: Convert to fraction form
    57,766.63/79,717.95 = 31,270.63/x
  3. Step 3: Cross multiply
    57,766.63x = 79,717.95 × 31,270.63
  4. Step 4: Simplify right side
    57,766.63x = 2,492,830,518.81
  5. Step 5: Solve for x
    x = 2,492,830,518.81/57,766.63
  6. Step 6: Final answer
    x = 43,153.47

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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.