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Finding the Fourth Proportional to 115,595.60, 173,278.20 and 53,157.20

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Solution

The fourth proportional to 115,595.60, 173,278.20 and 53,157.20 is: 79,682.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,595.60 : 173,278.20 = 53,157.20 : x
  2. Step 2: Convert to fraction form
    115,595.60/173,278.20 = 53,157.20/x
  3. Step 3: Cross multiply
    115,595.60x = 173,278.20 × 53,157.20
  4. Step 4: Simplify right side
    115,595.60x = 9,210,983,933.04
  5. Step 5: Solve for x
    x = 9,210,983,933.04/115,595.60
  6. Step 6: Final answer
    x = 79,682.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.