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Finding the Fourth Proportional to 188,638.91, 260,244.90 and 106,949.95

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Solution

The fourth proportional to 188,638.91, 260,244.90 and 106,949.95 is: 147,547.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,638.91 : 260,244.90 = 106,949.95 : x
  2. Step 2: Convert to fraction form
    188,638.91/260,244.90 = 106,949.95/x
  3. Step 3: Cross multiply
    188,638.91x = 260,244.90 × 106,949.95
  4. Step 4: Simplify right side
    188,638.91x = 27,833,179,042.76
  5. Step 5: Solve for x
    x = 27,833,179,042.76/188,638.91
  6. Step 6: Final answer
    x = 147,547.39

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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.