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Finding the Fourth Proportional to 156,636.59, 234,976.75 and 77,729.63

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Solution

The fourth proportional to 156,636.59, 234,976.75 and 77,729.63 is: 116,605.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,636.59 : 234,976.75 = 77,729.63 : x
  2. Step 2: Convert to fraction form
    156,636.59/234,976.75 = 77,729.63/x
  3. Step 3: Cross multiply
    156,636.59x = 234,976.75 × 77,729.63
  4. Step 4: Simplify right side
    156,636.59x = 18,264,654,466.89
  5. Step 5: Solve for x
    x = 18,264,654,466.89/156,636.59
  6. Step 6: Final answer
    x = 116,605.29

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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.