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Finding the Fourth Proportional to 25,672.86, 35,428.53 and 15,604.54

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Solution

The fourth proportional to 25,672.86, 35,428.53 and 15,604.54 is: 21,534.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,672.86 : 35,428.53 = 15,604.54 : x
  2. Step 2: Convert to fraction form
    25,672.86/35,428.53 = 15,604.54/x
  3. Step 3: Cross multiply
    25,672.86x = 35,428.53 × 15,604.54
  4. Step 4: Simplify right side
    25,672.86x = 552,845,913.53
  5. Step 5: Solve for x
    x = 552,845,913.53/25,672.86
  6. Step 6: Final answer
    x = 21,534.25

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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.