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Finding the Fourth Proportional to 209,886.45, 289,349.85 and 177,490.92

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Solution

The fourth proportional to 209,886.45, 289,349.85 and 177,490.92 is: 244,689.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,886.45 : 289,349.85 = 177,490.92 : x
  2. Step 2: Convert to fraction form
    209,886.45/289,349.85 = 177,490.92/x
  3. Step 3: Cross multiply
    209,886.45x = 289,349.85 × 177,490.92
  4. Step 4: Simplify right side
    209,886.45x = 51,356,971,078.36
  5. Step 5: Solve for x
    x = 51,356,971,078.36/209,886.45
  6. Step 6: Final answer
    x = 244,689.31

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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.