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Finding the Fourth Proportional to 111,309.12, 153,601.92 and 61,004.88

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Solution

The fourth proportional to 111,309.12, 153,601.92 and 61,004.88 is: 84,184.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,309.12 : 153,601.92 = 61,004.88 : x
  2. Step 2: Convert to fraction form
    111,309.12/153,601.92 = 61,004.88/x
  3. Step 3: Cross multiply
    111,309.12x = 153,601.92 × 61,004.88
  4. Step 4: Simplify right side
    111,309.12x = 9,370,466,697.37
  5. Step 5: Solve for x
    x = 9,370,466,697.37/111,309.12
  6. Step 6: Final answer
    x = 84,184.18

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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.