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Finding the Fourth Proportional to 188,328.90, 282,511.84 and 61,917.86

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Solution

The fourth proportional to 188,328.90, 282,511.84 and 61,917.86 is: 92,882.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,328.90 : 282,511.84 = 61,917.86 : x
  2. Step 2: Convert to fraction form
    188,328.90/282,511.84 = 61,917.86/x
  3. Step 3: Cross multiply
    188,328.90x = 282,511.84 × 61,917.86
  4. Step 4: Simplify right side
    188,328.90x = 17,492,528,557.46
  5. Step 5: Solve for x
    x = 17,492,528,557.46/188,328.90
  6. Step 6: Final answer
    x = 92,882.87

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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.