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Finding the Fourth Proportional to 111,858.45, 154,364.96 and 61,557.45

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Solution

The fourth proportional to 111,858.45, 154,364.96 and 61,557.45 is: 84,949.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,858.45 : 154,364.96 = 61,557.45 : x
  2. Step 2: Convert to fraction form
    111,858.45/154,364.96 = 61,557.45/x
  3. Step 3: Cross multiply
    111,858.45x = 154,364.96 × 61,557.45
  4. Step 4: Simplify right side
    111,858.45x = 9,502,313,306.95
  5. Step 5: Solve for x
    x = 9,502,313,306.95/111,858.45
  6. Step 6: Final answer
    x = 84,949.45

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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.