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Finding the Fourth Proportional to 191,613.60, 264,419.64 and 106,728.84

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Solution

The fourth proportional to 191,613.60, 264,419.64 and 106,728.84 is: 147,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,613.60 : 264,419.64 = 106,728.84 : x
  2. Step 2: Convert to fraction form
    191,613.60/264,419.64 = 106,728.84/x
  3. Step 3: Cross multiply
    191,613.60x = 264,419.64 × 106,728.84
  4. Step 4: Simplify right side
    191,613.60x = 28,221,201,450.42
  5. Step 5: Solve for x
    x = 28,221,201,450.42/191,613.60
  6. Step 6: Final answer
    x = 147,281.83

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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.