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Finding the Fourth Proportional to 25,349.94, 34,975.77 and 15,139.77

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Solution

The fourth proportional to 25,349.94, 34,975.77 and 15,139.77 is: 20,888.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,349.94 : 34,975.77 = 15,139.77 : x
  2. Step 2: Convert to fraction form
    25,349.94/34,975.77 = 15,139.77/x
  3. Step 3: Cross multiply
    25,349.94x = 34,975.77 × 15,139.77
  4. Step 4: Simplify right side
    25,349.94x = 529,525,113.37
  5. Step 5: Solve for x
    x = 529,525,113.37/25,349.94
  6. Step 6: Final answer
    x = 20,888.61

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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.