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Finding the Fourth Proportional to 408,230.10, 612,345.15 and 186,614.10

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Solution

The fourth proportional to 408,230.10, 612,345.15 and 186,614.10 is: 279,921.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,230.10 : 612,345.15 = 186,614.10 : x
  2. Step 2: Convert to fraction form
    408,230.10/612,345.15 = 186,614.10/x
  3. Step 3: Cross multiply
    408,230.10x = 612,345.15 × 186,614.10
  4. Step 4: Simplify right side
    408,230.10x = 114,272,239,056.62
  5. Step 5: Solve for x
    x = 114,272,239,056.62/408,230.10
  6. Step 6: Final answer
    x = 279,921.15

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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.