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Finding the Fourth Proportional to 15,925.91, 23,889.15 and 4,239

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Solution

The fourth proportional to 15,925.91, 23,889.15 and 4,239 is: 6,358.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,925.91 : 23,889.15 = 4,239 : x
  2. Step 2: Convert to fraction form
    15,925.91/23,889.15 = 4,239/x
  3. Step 3: Cross multiply
    15,925.91x = 23,889.15 × 4,239
  4. Step 4: Simplify right side
    15,925.91x = 101,266,106.85
  5. Step 5: Solve for x
    x = 101,266,106.85/15,925.91
  6. Step 6: Final answer
    x = 6,358.58

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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.