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Finding the Fourth Proportional to 406,765.92, 561,147.12 and 255,946.08

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Solution

The fourth proportional to 406,765.92, 561,147.12 and 255,946.08 is: 353,086.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,765.92 : 561,147.12 = 255,946.08 : x
  2. Step 2: Convert to fraction form
    406,765.92/561,147.12 = 255,946.08/x
  3. Step 3: Cross multiply
    406,765.92x = 561,147.12 × 255,946.08
  4. Step 4: Simplify right side
    406,765.92x = 143,623,405,667.29
  5. Step 5: Solve for x
    x = 143,623,405,667.29/406,765.92
  6. Step 6: Final answer
    x = 353,086.13

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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.