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Finding the Fourth Proportional to 393,553.92, 543,280.32 and 266,615.04

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Solution

The fourth proportional to 393,553.92, 543,280.32 and 266,615.04 is: 368,047.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,553.92 : 543,280.32 = 266,615.04 : x
  2. Step 2: Convert to fraction form
    393,553.92/543,280.32 = 266,615.04/x
  3. Step 3: Cross multiply
    393,553.92x = 543,280.32 × 266,615.04
  4. Step 4: Simplify right side
    393,553.92x = 144,846,704,248.01
  5. Step 5: Solve for x
    x = 144,846,704,248.01/393,553.92
  6. Step 6: Final answer
    x = 368,047.93

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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.