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Finding the Fourth Proportional to 111,651.19, 154,085.53 and 63,903.51

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Solution

The fourth proportional to 111,651.19, 154,085.53 and 63,903.51 is: 88,190.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,651.19 : 154,085.53 = 63,903.51 : x
  2. Step 2: Convert to fraction form
    111,651.19/154,085.53 = 63,903.51/x
  3. Step 3: Cross multiply
    111,651.19x = 154,085.53 × 63,903.51
  4. Step 4: Simplify right side
    111,651.19x = 9,846,606,752.18
  5. Step 5: Solve for x
    x = 9,846,606,752.18/111,651.19
  6. Step 6: Final answer
    x = 88,190.79

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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.