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Finding the Fourth Proportional to 543,639.17, 815,746.71 and 395,105.42

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Solution

The fourth proportional to 543,639.17, 815,746.71 and 395,105.42 is: 592,867.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,639.17 : 815,746.71 = 395,105.42 : x
  2. Step 2: Convert to fraction form
    543,639.17/815,746.71 = 395,105.42/x
  3. Step 3: Cross multiply
    543,639.17x = 815,746.71 × 395,105.42
  4. Step 4: Simplify right side
    543,639.17x = 322,305,946,468.17
  5. Step 5: Solve for x
    x = 322,305,946,468.17/543,639.17
  6. Step 6: Final answer
    x = 592,867.41

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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.