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Finding the Fourth Proportional to 386,532.01, 533,439.40 and 223,195.40

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Solution

The fourth proportional to 386,532.01, 533,439.40 and 223,195.40 is: 308,024.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,532.01 : 533,439.40 = 223,195.40 : x
  2. Step 2: Convert to fraction form
    386,532.01/533,439.40 = 223,195.40/x
  3. Step 3: Cross multiply
    386,532.01x = 533,439.40 × 223,195.40
  4. Step 4: Simplify right side
    386,532.01x = 119,061,219,142.78
  5. Step 5: Solve for x
    x = 119,061,219,142.78/386,532.01
  6. Step 6: Final answer
    x = 308,024.22

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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.