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Finding the Fourth Proportional to 25,170.72, 34,735.72 and 13,840.94

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Solution

The fourth proportional to 25,170.72, 34,735.72 and 13,840.94 is: 19,100.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,170.72 : 34,735.72 = 13,840.94 : x
  2. Step 2: Convert to fraction form
    25,170.72/34,735.72 = 13,840.94/x
  3. Step 3: Cross multiply
    25,170.72x = 34,735.72 × 13,840.94
  4. Step 4: Simplify right side
    25,170.72x = 480,775,068.61
  5. Step 5: Solve for x
    x = 480,775,068.61/25,170.72
  6. Step 6: Final answer
    x = 19,100.57

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1.5x scale

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.