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Finding the Fourth Proportional to 386,057.30, 578,049.15 and 386,057.30

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Solution

The fourth proportional to 386,057.30, 578,049.15 and 386,057.30 is: 578,049.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,057.30 : 578,049.15 = 386,057.30 : x
  2. Step 2: Convert to fraction form
    386,057.30/578,049.15 = 386,057.30/x
  3. Step 3: Cross multiply
    386,057.30x = 578,049.15 × 386,057.30
  4. Step 4: Simplify right side
    386,057.30x = 223,160,094,116.30
  5. Step 5: Solve for x
    x = 223,160,094,116.30/386,057.30
  6. Step 6: Final answer
    x = 578,049.15

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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.