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Finding the Fourth Proportional to 543,953.31, 815,929.81 and 169,976.31

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Solution

The fourth proportional to 543,953.31, 815,929.81 and 169,976.31 is: 254,964.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,953.31 : 815,929.81 = 169,976.31 : x
  2. Step 2: Convert to fraction form
    543,953.31/815,929.81 = 169,976.31/x
  3. Step 3: Cross multiply
    543,953.31x = 815,929.81 × 169,976.31
  4. Step 4: Simplify right side
    543,953.31x = 138,688,734,838.12
  5. Step 5: Solve for x
    x = 138,688,734,838.12/543,953.31
  6. Step 6: Final answer
    x = 254,964.41

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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.