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Finding the Fourth Proportional to 111,447.39, 153,800.07 and 61,146.39

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Solution

The fourth proportional to 111,447.39, 153,800.07 and 61,146.39 is: 84,383.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,447.39 : 153,800.07 = 61,146.39 : x
  2. Step 2: Convert to fraction form
    111,447.39/153,800.07 = 61,146.39/x
  3. Step 3: Cross multiply
    111,447.39x = 153,800.07 × 61,146.39
  4. Step 4: Simplify right side
    111,447.39x = 9,404,319,062.25
  5. Step 5: Solve for x
    x = 9,404,319,062.25/111,447.39
  6. Step 6: Final answer
    x = 84,383.48

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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.