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Finding the Fourth Proportional to 156,695.92, 216,239.76 and 85,075.92

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Solution

The fourth proportional to 156,695.92, 216,239.76 and 85,075.92 is: 117,404.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,695.92 : 216,239.76 = 85,075.92 : x
  2. Step 2: Convert to fraction form
    156,695.92/216,239.76 = 85,075.92/x
  3. Step 3: Cross multiply
    156,695.92x = 216,239.76 × 85,075.92
  4. Step 4: Simplify right side
    156,695.92x = 18,396,796,522.58
  5. Step 5: Solve for x
    x = 18,396,796,522.58/156,695.92
  6. Step 6: Final answer
    x = 117,404.44

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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.