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Finding the Fourth Proportional to 57,640.50, 86,460.75 and 16,087.50

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Solution

The fourth proportional to 57,640.50, 86,460.75 and 16,087.50 is: 24,131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,640.50 : 86,460.75 = 16,087.50 : x
  2. Step 2: Convert to fraction form
    57,640.50/86,460.75 = 16,087.50/x
  3. Step 3: Cross multiply
    57,640.50x = 86,460.75 × 16,087.50
  4. Step 4: Simplify right side
    57,640.50x = 1,390,937,315.63
  5. Step 5: Solve for x
    x = 1,390,937,315.63/57,640.50
  6. Step 6: Final answer
    x = 24,131.25

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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.