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Finding the Fourth Proportional to 111,556.70, 153,948.22 and 61,255.70

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Solution

The fourth proportional to 111,556.70, 153,948.22 and 61,255.70 is: 84,532.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,556.70 : 153,948.22 = 61,255.70 : x
  2. Step 2: Convert to fraction form
    111,556.70/153,948.22 = 61,255.70/x
  3. Step 3: Cross multiply
    111,556.70x = 153,948.22 × 61,255.70
  4. Step 4: Simplify right side
    111,556.70x = 9,430,205,979.85
  5. Step 5: Solve for x
    x = 9,430,205,979.85/111,556.70
  6. Step 6: Final answer
    x = 84,532.85

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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.