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Finding the Fourth Proportional to 156,651.49, 216,180.01 and 85,032.03

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Solution

The fourth proportional to 156,651.49, 216,180.01 and 85,032.03 is: 117,344.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,651.49 : 216,180.01 = 85,032.03 : x
  2. Step 2: Convert to fraction form
    156,651.49/216,180.01 = 85,032.03/x
  3. Step 3: Cross multiply
    156,651.49x = 216,180.01 × 85,032.03
  4. Step 4: Simplify right side
    156,651.49x = 18,382,225,035.83
  5. Step 5: Solve for x
    x = 18,382,225,035.83/156,651.49
  6. Step 6: Final answer
    x = 117,344.72

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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.