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Finding the Fourth Proportional to 116,506.98, 160,778.10 and 65,519.70

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Solution

The fourth proportional to 116,506.98, 160,778.10 and 65,519.70 is: 90,416.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,506.98 : 160,778.10 = 65,519.70 : x
  2. Step 2: Convert to fraction form
    116,506.98/160,778.10 = 65,519.70/x
  3. Step 3: Cross multiply
    116,506.98x = 160,778.10 × 65,519.70
  4. Step 4: Simplify right side
    116,506.98x = 10,534,132,878.57
  5. Step 5: Solve for x
    x = 10,534,132,878.57/116,506.98
  6. Step 6: Final answer
    x = 90,416.32

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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.