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Finding the Fourth Proportional to 111,858.60, 154,364.82 and 61,557.60

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Solution

The fourth proportional to 111,858.60, 154,364.82 and 61,557.60 is: 84,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,858.60 : 154,364.82 = 61,557.60 : x
  2. Step 2: Convert to fraction form
    111,858.60/154,364.82 = 61,557.60/x
  3. Step 3: Cross multiply
    111,858.60x = 154,364.82 × 61,557.60
  4. Step 4: Simplify right side
    111,858.60x = 9,502,327,843.63
  5. Step 5: Solve for x
    x = 9,502,327,843.63/111,858.60
  6. Step 6: Final answer
    x = 84,949.46

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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.