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Finding the Fourth Proportional to 111,853.51, 154,353.30 and 64,073.63

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Solution

The fourth proportional to 111,853.51, 154,353.30 and 64,073.63 is: 88,419.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,853.51 : 154,353.30 = 64,073.63 : x
  2. Step 2: Convert to fraction form
    111,853.51/154,353.30 = 64,073.63/x
  3. Step 3: Cross multiply
    111,853.51x = 154,353.30 × 64,073.63
  4. Step 4: Simplify right side
    111,853.51x = 9,889,976,379.09
  5. Step 5: Solve for x
    x = 9,889,976,379.09/111,853.51
  6. Step 6: Final answer
    x = 88,419.01

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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.