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Finding the Fourth Proportional to 289,951.92, 399,956.77 and 191,835

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Solution

The fourth proportional to 289,951.92, 399,956.77 and 191,835 is: 264,615.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,951.92 : 399,956.77 = 191,835 : x
  2. Step 2: Convert to fraction form
    289,951.92/399,956.77 = 191,835/x
  3. Step 3: Cross multiply
    289,951.92x = 399,956.77 × 191,835
  4. Step 4: Simplify right side
    289,951.92x = 76,725,706,013.78
  5. Step 5: Solve for x
    x = 76,725,706,013.78/289,951.92
  6. Step 6: Final answer
    x = 264,615.27

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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.