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Finding the Fourth Proportional to 386,046.80, 578,033.40 and 386,046.80

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Solution

The fourth proportional to 386,046.80, 578,033.40 and 386,046.80 is: 578,033.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,046.80 : 578,033.40 = 386,046.80 : x
  2. Step 2: Convert to fraction form
    386,046.80/578,033.40 = 386,046.80/x
  3. Step 3: Cross multiply
    386,046.80x = 578,033.40 × 386,046.80
  4. Step 4: Simplify right side
    386,046.80x = 223,147,944,363.12
  5. Step 5: Solve for x
    x = 223,147,944,363.12/386,046.80
  6. Step 6: Final answer
    x = 578,033.40

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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.