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Finding the Fourth Proportional to 116,386.70, 160,613.81 and 66,085.70

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Solution

The fourth proportional to 116,386.70, 160,613.81 and 66,085.70 is: 91,198.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,386.70 : 160,613.81 = 66,085.70 : x
  2. Step 2: Convert to fraction form
    116,386.70/160,613.81 = 66,085.70/x
  3. Step 3: Cross multiply
    116,386.70x = 160,613.81 × 66,085.70
  4. Step 4: Simplify right side
    116,386.70x = 10,614,274,930.02
  5. Step 5: Solve for x
    x = 10,614,274,930.02/116,386.70
  6. Step 6: Final answer
    x = 91,198.35

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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.