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Finding the Fourth Proportional to 171,685.80, 257,528.70 and 112,555.80

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Solution

The fourth proportional to 171,685.80, 257,528.70 and 112,555.80 is: 168,833.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,685.80 : 257,528.70 = 112,555.80 : x
  2. Step 2: Convert to fraction form
    171,685.80/257,528.70 = 112,555.80/x
  3. Step 3: Cross multiply
    171,685.80x = 257,528.70 × 112,555.80
  4. Step 4: Simplify right side
    171,685.80x = 28,986,348,851.46
  5. Step 5: Solve for x
    x = 28,986,348,851.46/171,685.80
  6. Step 6: Final answer
    x = 168,833.70

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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.