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Finding the Fourth Proportional to 156,969.88, 216,616.93 and 85,349.92

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Solution

The fourth proportional to 156,969.88, 216,616.93 and 85,349.92 is: 117,782.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,969.88 : 216,616.93 = 85,349.92 : x
  2. Step 2: Convert to fraction form
    156,969.88/216,616.93 = 85,349.92/x
  3. Step 3: Cross multiply
    156,969.88x = 216,616.93 × 85,349.92
  4. Step 4: Simplify right side
    156,969.88x = 18,488,237,777.48
  5. Step 5: Solve for x
    x = 18,488,237,777.48/156,969.88
  6. Step 6: Final answer
    x = 117,782.07

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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.