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Finding the Fourth Proportional to 116,508.14, 160,779.69 and 65,520.86

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Solution

The fourth proportional to 116,508.14, 160,779.69 and 65,520.86 is: 90,417.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,508.14 : 160,779.69 = 65,520.86 : x
  2. Step 2: Convert to fraction form
    116,508.14/160,779.69 = 65,520.86/x
  3. Step 3: Cross multiply
    116,508.14x = 160,779.69 × 65,520.86
  4. Step 4: Simplify right side
    116,508.14x = 10,534,422,755.44
  5. Step 5: Solve for x
    x = 10,534,422,755.44/116,508.14
  6. Step 6: Final answer
    x = 90,417.91

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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.