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Finding the Fourth Proportional to 52,465.76, 78,709.88 and 16,929.11

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Solution

The fourth proportional to 52,465.76, 78,709.88 and 16,929.11 is: 25,397.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,465.76 : 78,709.88 = 16,929.11 : x
  2. Step 2: Convert to fraction form
    52,465.76/78,709.88 = 16,929.11/x
  3. Step 3: Cross multiply
    52,465.76x = 78,709.88 × 16,929.11
  4. Step 4: Simplify right side
    52,465.76x = 1,332,488,455.70
  5. Step 5: Solve for x
    x = 1,332,488,455.70/52,465.76
  6. Step 6: Final answer
    x = 25,397.30

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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.