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Finding the Fourth Proportional to 156,613.78, 234,755.85 and 99,730.93

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Solution

The fourth proportional to 156,613.78, 234,755.85 and 99,730.93 is: 149,491.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,613.78 : 234,755.85 = 99,730.93 : x
  2. Step 2: Convert to fraction form
    156,613.78/234,755.85 = 99,730.93/x
  3. Step 3: Cross multiply
    156,613.78x = 234,755.85 × 99,730.93
  4. Step 4: Simplify right side
    156,613.78x = 23,412,418,069.66
  5. Step 5: Solve for x
    x = 23,412,418,069.66/156,613.78
  6. Step 6: Final answer
    x = 149,491.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.