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Finding the Fourth Proportional to 114,785.90, 171,838.65 and 85,334.30

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Solution

The fourth proportional to 114,785.90, 171,838.65 and 85,334.30 is: 127,748.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,785.90 : 171,838.65 = 85,334.30 : x
  2. Step 2: Convert to fraction form
    114,785.90/171,838.65 = 85,334.30/x
  3. Step 3: Cross multiply
    114,785.90x = 171,838.65 × 85,334.30
  4. Step 4: Simplify right side
    114,785.90x = 14,663,730,910.70
  5. Step 5: Solve for x
    x = 14,663,730,910.70/114,785.90
  6. Step 6: Final answer
    x = 127,748.54

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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.