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Finding the Fourth Proportional to 404,666.32, 558,439.64 and 223,378.40

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Solution

The fourth proportional to 404,666.32, 558,439.64 and 223,378.40 is: 308,262.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,666.32 : 558,439.64 = 223,378.40 : x
  2. Step 2: Convert to fraction form
    404,666.32/558,439.64 = 223,378.40/x
  3. Step 3: Cross multiply
    404,666.32x = 558,439.64 × 223,378.40
  4. Step 4: Simplify right side
    404,666.32x = 124,743,353,279.78
  5. Step 5: Solve for x
    x = 124,743,353,279.78/404,666.32
  6. Step 6: Final answer
    x = 308,262.26

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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.