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Finding the Fourth Proportional to 156,882.81, 216,499.95 and 85,262.84

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Solution

The fourth proportional to 156,882.81, 216,499.95 and 85,262.84 is: 117,663.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,882.81 : 216,499.95 = 85,262.84 : x
  2. Step 2: Convert to fraction form
    156,882.81/216,499.95 = 85,262.84/x
  3. Step 3: Cross multiply
    156,882.81x = 216,499.95 × 85,262.84
  4. Step 4: Simplify right side
    156,882.81x = 18,459,399,514.36
  5. Step 5: Solve for x
    x = 18,459,399,514.36/156,882.81
  6. Step 6: Final answer
    x = 117,663.62

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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.