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Finding the Fourth Proportional to 393,206.20, 590,246.70 and 243,615.40

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Solution

The fourth proportional to 393,206.20, 590,246.70 and 243,615.40 is: 365,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,206.20 : 590,246.70 = 243,615.40 : x
  2. Step 2: Convert to fraction form
    393,206.20/590,246.70 = 243,615.40/x
  3. Step 3: Cross multiply
    393,206.20x = 590,246.70 × 243,615.40
  4. Step 4: Simplify right side
    393,206.20x = 143,793,185,919.18
  5. Step 5: Solve for x
    x = 143,793,185,919.18/393,206.20
  6. Step 6: Final answer
    x = 365,694.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.