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Finding the Fourth Proportional to 387,816.56, 581,410.47 and 174,428.23

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Solution

The fourth proportional to 387,816.56, 581,410.47 and 174,428.23 is: 261,500.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,816.56 : 581,410.47 = 174,428.23 : x
  2. Step 2: Convert to fraction form
    387,816.56/581,410.47 = 174,428.23/x
  3. Step 3: Cross multiply
    387,816.56x = 581,410.47 × 174,428.23
  4. Step 4: Simplify right side
    387,816.56x = 101,414,399,185.57
  5. Step 5: Solve for x
    x = 101,414,399,185.57/387,816.56
  6. Step 6: Final answer
    x = 261,500.95

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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.