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Finding the Fourth Proportional to 165,898.41, 228,939.92 and 90,446.91

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Solution

The fourth proportional to 165,898.41, 228,939.92 and 90,446.91 is: 124,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,898.41 : 228,939.92 = 90,446.91 : x
  2. Step 2: Convert to fraction form
    165,898.41/228,939.92 = 90,446.91/x
  3. Step 3: Cross multiply
    165,898.41x = 228,939.92 × 90,446.91
  4. Step 4: Simplify right side
    165,898.41x = 20,706,908,339.65
  5. Step 5: Solve for x
    x = 20,706,908,339.65/165,898.41
  6. Step 6: Final answer
    x = 124,816.80

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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.