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Finding the Fourth Proportional to 276,685.60, 415,028.40 and 171,709.60

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Solution

The fourth proportional to 276,685.60, 415,028.40 and 171,709.60 is: 257,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,685.60 : 415,028.40 = 171,709.60 : x
  2. Step 2: Convert to fraction form
    276,685.60/415,028.40 = 171,709.60/x
  3. Step 3: Cross multiply
    276,685.60x = 415,028.40 × 171,709.60
  4. Step 4: Simplify right side
    276,685.60x = 71,264,360,552.64
  5. Step 5: Solve for x
    x = 71,264,360,552.64/276,685.60
  6. Step 6: Final answer
    x = 257,564.40

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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.