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Finding the Fourth Proportional to 157,145.25, 216,865.04 and 85,529.91

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Solution

The fourth proportional to 157,145.25, 216,865.04 and 85,529.91 is: 118,033.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,145.25 : 216,865.04 = 85,529.91 : x
  2. Step 2: Convert to fraction form
    157,145.25/216,865.04 = 85,529.91/x
  3. Step 3: Cross multiply
    157,145.25x = 216,865.04 × 85,529.91
  4. Step 4: Simplify right side
    157,145.25x = 18,548,447,353.35
  5. Step 5: Solve for x
    x = 18,548,447,353.35/157,145.25
  6. Step 6: Final answer
    x = 118,033.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.