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Finding the Fourth Proportional to 111,367.49, 153,709.47 and 66,070.62

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Solution

The fourth proportional to 111,367.49, 153,709.47 and 66,070.62 is: 91,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,367.49 : 153,709.47 = 66,070.62 : x
  2. Step 2: Convert to fraction form
    111,367.49/153,709.47 = 66,070.62/x
  3. Step 3: Cross multiply
    111,367.49x = 153,709.47 × 66,070.62
  4. Step 4: Simplify right side
    111,367.49x = 10,155,679,982.77
  5. Step 5: Solve for x
    x = 10,155,679,982.77/111,367.49
  6. Step 6: Final answer
    x = 91,190.71

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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.