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Finding the Fourth Proportional to 153,157.64, 211,367.22 and 86,093.96

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Solution

The fourth proportional to 153,157.64, 211,367.22 and 86,093.96 is: 118,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,157.64 : 211,367.22 = 86,093.96 : x
  2. Step 2: Convert to fraction form
    153,157.64/211,367.22 = 86,093.96/x
  3. Step 3: Cross multiply
    153,157.64x = 211,367.22 × 86,093.96
  4. Step 4: Simplify right side
    153,157.64x = 18,197,440,983.99
  5. Step 5: Solve for x
    x = 18,197,440,983.99/153,157.64
  6. Step 6: Final answer
    x = 118,815.10

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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.