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Finding the Fourth Proportional to 57,891.89, 86,681.70 and 37,851.68

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Solution

The fourth proportional to 57,891.89, 86,681.70 and 37,851.68 is: 56,675.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,891.89 : 86,681.70 = 37,851.68 : x
  2. Step 2: Convert to fraction form
    57,891.89/86,681.70 = 37,851.68/x
  3. Step 3: Cross multiply
    57,891.89x = 86,681.70 × 37,851.68
  4. Step 4: Simplify right side
    57,891.89x = 3,281,047,970.26
  5. Step 5: Solve for x
    x = 3,281,047,970.26/57,891.89
  6. Step 6: Final answer
    x = 56,675.43

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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.