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Finding the Fourth Proportional to 57,897.20, 86,850.60 and 18,453.20

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Solution

The fourth proportional to 57,897.20, 86,850.60 and 18,453.20 is: 27,681.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,897.20 : 86,850.60 = 18,453.20 : x
  2. Step 2: Convert to fraction form
    57,897.20/86,850.60 = 18,453.20/x
  3. Step 3: Cross multiply
    57,897.20x = 86,850.60 × 18,453.20
  4. Step 4: Simplify right side
    57,897.20x = 1,602,671,491.92
  5. Step 5: Solve for x
    x = 1,602,671,491.92/57,897.20
  6. Step 6: Final answer
    x = 27,681.33

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1.5x scale

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.