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Finding the Fourth Proportional to 191,690.76, 264,527.08 and 120,109.44

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Solution

The fourth proportional to 191,690.76, 264,527.08 and 120,109.44 is: 165,747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,690.76 : 264,527.08 = 120,109.44 : x
  2. Step 2: Convert to fraction form
    191,690.76/264,527.08 = 120,109.44/x
  3. Step 3: Cross multiply
    191,690.76x = 264,527.08 × 120,109.44
  4. Step 4: Simplify right side
    191,690.76x = 31,772,199,443.64
  5. Step 5: Solve for x
    x = 31,772,199,443.64/191,690.76
  6. Step 6: Final answer
    x = 165,747.16

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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.