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Finding the Fourth Proportional to 156,969.44, 216,620.53 and 85,349.94

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Solution

The fourth proportional to 156,969.44, 216,620.53 and 85,349.94 is: 117,784.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,969.44 : 216,620.53 = 85,349.94 : x
  2. Step 2: Convert to fraction form
    156,969.44/216,620.53 = 85,349.94/x
  3. Step 3: Cross multiply
    156,969.44x = 216,620.53 × 85,349.94
  4. Step 4: Simplify right side
    156,969.44x = 18,488,549,024.89
  5. Step 5: Solve for x
    x = 18,488,549,024.89/156,969.44
  6. Step 6: Final answer
    x = 117,784.39

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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.