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Finding the Fourth Proportional to 317,426.64, 438,048.52 and 181,463.60

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Solution

The fourth proportional to 317,426.64, 438,048.52 and 181,463.60 is: 250,419.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,426.64 : 438,048.52 = 181,463.60 : x
  2. Step 2: Convert to fraction form
    317,426.64/438,048.52 = 181,463.60/x
  3. Step 3: Cross multiply
    317,426.64x = 438,048.52 × 181,463.60
  4. Step 4: Simplify right side
    317,426.64x = 79,489,861,413.87
  5. Step 5: Solve for x
    x = 79,489,861,413.87/317,426.64
  6. Step 6: Final answer
    x = 250,419.63

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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.