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Finding the Fourth Proportional to 185,652.50, 278,434.08 and 85,716.68

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Solution

The fourth proportional to 185,652.50, 278,434.08 and 85,716.68 is: 128,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,652.50 : 278,434.08 = 85,716.68 : x
  2. Step 2: Convert to fraction form
    185,652.50/278,434.08 = 85,716.68/x
  3. Step 3: Cross multiply
    185,652.50x = 278,434.08 × 85,716.68
  4. Step 4: Simplify right side
    185,652.50x = 23,866,444,936.45
  5. Step 5: Solve for x
    x = 23,866,444,936.45/185,652.50
  6. Step 6: Final answer
    x = 128,554.40

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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.