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Finding the Fourth Proportional to 156,996.67, 216,661.12 and 89,941.63

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Solution

The fourth proportional to 156,996.67, 216,661.12 and 89,941.63 is: 124,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,996.67 : 216,661.12 = 89,941.63 : x
  2. Step 2: Convert to fraction form
    156,996.67/216,661.12 = 89,941.63/x
  3. Step 3: Cross multiply
    156,996.67x = 216,661.12 × 89,941.63
  4. Step 4: Simplify right side
    156,996.67x = 19,486,854,290.43
  5. Step 5: Solve for x
    x = 19,486,854,290.43/156,996.67
  6. Step 6: Final answer
    x = 124,122.72

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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.