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Finding the Fourth Proportional to 156,634.84, 216,156.29 and 85,014.87

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Solution

The fourth proportional to 156,634.84, 216,156.29 and 85,014.87 is: 117,320.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,634.84 : 216,156.29 = 85,014.87 : x
  2. Step 2: Convert to fraction form
    156,634.84/216,156.29 = 85,014.87/x
  3. Step 3: Cross multiply
    156,634.84x = 216,156.29 × 85,014.87
  4. Step 4: Simplify right side
    156,634.84x = 18,376,499,646.96
  5. Step 5: Solve for x
    x = 18,376,499,646.96/156,634.84
  6. Step 6: Final answer
    x = 117,320.64

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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.