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Finding the Fourth Proportional to 191,956.55, 287,811.79 and 79,714.24

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Solution

The fourth proportional to 191,956.55, 287,811.79 and 79,714.24 is: 119,520.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,956.55 : 287,811.79 = 79,714.24 : x
  2. Step 2: Convert to fraction form
    191,956.55/287,811.79 = 79,714.24/x
  3. Step 3: Cross multiply
    191,956.55x = 287,811.79 × 79,714.24
  4. Step 4: Simplify right side
    191,956.55x = 22,942,697,483.00
  5. Step 5: Solve for x
    x = 22,942,697,483.00/191,956.55
  6. Step 6: Final answer
    x = 119,520.27

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1.5x scale

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.