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Finding the Fourth Proportional to 171,039.40, 256,559.10 and 77,727.40

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Solution

The fourth proportional to 171,039.40, 256,559.10 and 77,727.40 is: 116,591.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,039.40 : 256,559.10 = 77,727.40 : x
  2. Step 2: Convert to fraction form
    171,039.40/256,559.10 = 77,727.40/x
  3. Step 3: Cross multiply
    171,039.40x = 256,559.10 × 77,727.40
  4. Step 4: Simplify right side
    171,039.40x = 19,941,671,789.34
  5. Step 5: Solve for x
    x = 19,941,671,789.34/171,039.40
  6. Step 6: Final answer
    x = 116,591.10

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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.