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Finding the Fourth Proportional to 393,526.17, 543,063.61 and 223,760.31

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Solution

The fourth proportional to 393,526.17, 543,063.61 and 223,760.31 is: 308,787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,526.17 : 543,063.61 = 223,760.31 : x
  2. Step 2: Convert to fraction form
    393,526.17/543,063.61 = 223,760.31/x
  3. Step 3: Cross multiply
    393,526.17x = 543,063.61 × 223,760.31
  4. Step 4: Simplify right side
    393,526.17x = 121,516,083,360.68
  5. Step 5: Solve for x
    x = 121,516,083,360.68/393,526.17
  6. Step 6: Final answer
    x = 308,787.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.