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Finding the Fourth Proportional to 191,818.14, 264,702.96 and 105,780.75

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Solution

The fourth proportional to 191,818.14, 264,702.96 and 105,780.75 is: 145,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,818.14 : 264,702.96 = 105,780.75 : x
  2. Step 2: Convert to fraction form
    191,818.14/264,702.96 = 105,780.75/x
  3. Step 3: Cross multiply
    191,818.14x = 264,702.96 × 105,780.75
  4. Step 4: Simplify right side
    191,818.14x = 28,000,477,636.02
  5. Step 5: Solve for x
    x = 28,000,477,636.02/191,818.14
  6. Step 6: Final answer
    x = 145,974.09

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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.