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Finding the Fourth Proportional to 116,505.97, 160,776.70 and 65,518.68

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Solution

The fourth proportional to 116,505.97, 160,776.70 and 65,518.68 is: 90,414.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,505.97 : 160,776.70 = 65,518.68 : x
  2. Step 2: Convert to fraction form
    116,505.97/160,776.70 = 65,518.68/x
  3. Step 3: Cross multiply
    116,505.97x = 160,776.70 × 65,518.68
  4. Step 4: Simplify right side
    116,505.97x = 10,533,877,404.45
  5. Step 5: Solve for x
    x = 10,533,877,404.45/116,505.97
  6. Step 6: Final answer
    x = 90,414.92

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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.