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Finding the Fourth Proportional to 25,658.70, 38,458.86 and 10,858.38

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Solution

The fourth proportional to 25,658.70, 38,458.86 and 10,858.38 is: 16,275.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,658.70 : 38,458.86 = 10,858.38 : x
  2. Step 2: Convert to fraction form
    25,658.70/38,458.86 = 10,858.38/x
  3. Step 3: Cross multiply
    25,658.70x = 38,458.86 × 10,858.38
  4. Step 4: Simplify right side
    25,658.70x = 417,600,916.25
  5. Step 5: Solve for x
    x = 417,600,916.25/25,658.70
  6. Step 6: Final answer
    x = 16,275.22

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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.