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Finding the Fourth Proportional to 171,640.77, 257,477.78 and 53,280.33

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Solution

The fourth proportional to 171,640.77, 257,477.78 and 53,280.33 is: 79,925.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,640.77 : 257,477.78 = 53,280.33 : x
  2. Step 2: Convert to fraction form
    171,640.77/257,477.78 = 53,280.33/x
  3. Step 3: Cross multiply
    171,640.77x = 257,477.78 × 53,280.33
  4. Step 4: Simplify right side
    171,640.77x = 13,718,501,086.07
  5. Step 5: Solve for x
    x = 13,718,501,086.07/171,640.77
  6. Step 6: Final answer
    x = 79,925.66

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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.