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Finding the Fourth Proportional to 57,885.40, 86,828.10 and 25,117.40

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Solution

The fourth proportional to 57,885.40, 86,828.10 and 25,117.40 is: 37,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,885.40 : 86,828.10 = 25,117.40 : x
  2. Step 2: Convert to fraction form
    57,885.40/86,828.10 = 25,117.40/x
  3. Step 3: Cross multiply
    57,885.40x = 86,828.10 × 25,117.40
  4. Step 4: Simplify right side
    57,885.40x = 2,180,896,118.94
  5. Step 5: Solve for x
    x = 2,180,896,118.94/57,885.40
  6. Step 6: Final answer
    x = 37,676.10

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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.