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Finding the Fourth Proportional to 171,860.59, 257,757.54 and 86,448.70

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Solution

The fourth proportional to 171,860.59, 257,757.54 and 86,448.70 is: 129,656.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,860.59 : 257,757.54 = 86,448.70 : x
  2. Step 2: Convert to fraction form
    171,860.59/257,757.54 = 86,448.70/x
  3. Step 3: Cross multiply
    171,860.59x = 257,757.54 × 86,448.70
  4. Step 4: Simplify right side
    171,860.59x = 22,282,804,248.20
  5. Step 5: Solve for x
    x = 22,282,804,248.20/171,860.59
  6. Step 6: Final answer
    x = 129,656.28

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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.