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Finding the Fourth Proportional to 541,653.80, 812,480.70 and 384,189.80

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Solution

The fourth proportional to 541,653.80, 812,480.70 and 384,189.80 is: 576,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,653.80 : 812,480.70 = 384,189.80 : x
  2. Step 2: Convert to fraction form
    541,653.80/812,480.70 = 384,189.80/x
  3. Step 3: Cross multiply
    541,653.80x = 812,480.70 × 384,189.80
  4. Step 4: Simplify right side
    541,653.80x = 312,146,797,636.86
  5. Step 5: Solve for x
    x = 312,146,797,636.86/541,653.80
  6. Step 6: Final answer
    x = 576,284.70

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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.