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Finding the Fourth Proportional to 156,718.75, 216,271.88 and 89,650.75

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Solution

The fourth proportional to 156,718.75, 216,271.88 and 89,650.75 is: 123,718.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,718.75 : 216,271.88 = 89,650.75 : x
  2. Step 2: Convert to fraction form
    156,718.75/216,271.88 = 89,650.75/x
  3. Step 3: Cross multiply
    156,718.75x = 216,271.88 × 89,650.75
  4. Step 4: Simplify right side
    156,718.75x = 19,388,936,245.91
  5. Step 5: Solve for x
    x = 19,388,936,245.91/156,718.75
  6. Step 6: Final answer
    x = 123,718.04

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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.