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Finding the Fourth Proportional to 171,685.80, 257,528.70 and 115,698.60

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Solution

The fourth proportional to 171,685.80, 257,528.70 and 115,698.60 is: 173,547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,685.80 : 257,528.70 = 115,698.60 : x
  2. Step 2: Convert to fraction form
    171,685.80/257,528.70 = 115,698.60/x
  3. Step 3: Cross multiply
    171,685.80x = 257,528.70 × 115,698.60
  4. Step 4: Simplify right side
    171,685.80x = 29,795,710,049.82
  5. Step 5: Solve for x
    x = 29,795,710,049.82/171,685.80
  6. Step 6: Final answer
    x = 173,547.90

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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.