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Finding the Fourth Proportional to 111,305.80, 153,601.14 and 61,004.68

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Solution

The fourth proportional to 111,305.80, 153,601.14 and 61,004.68 is: 84,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,305.80 : 153,601.14 = 61,004.68 : x
  2. Step 2: Convert to fraction form
    111,305.80/153,601.14 = 61,004.68/x
  3. Step 3: Cross multiply
    111,305.80x = 153,601.14 × 61,004.68
  4. Step 4: Simplify right side
    111,305.80x = 9,370,388,393.34
  5. Step 5: Solve for x
    x = 9,370,388,393.34/111,305.80
  6. Step 6: Final answer
    x = 84,185.98

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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.