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Finding the Fourth Proportional to 58,273, 87,385.39 and 18,278.64

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Solution

The fourth proportional to 58,273, 87,385.39 and 18,278.64 is: 27,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,273 : 87,385.39 = 18,278.64 : x
  2. Step 2: Convert to fraction form
    58,273/87,385.39 = 18,278.64/x
  3. Step 3: Cross multiply
    58,273x = 87,385.39 × 18,278.64
  4. Step 4: Simplify right side
    58,273x = 1,597,286,085.07
  5. Step 5: Solve for x
    x = 1,597,286,085.07/58,273
  6. Step 6: Final answer
    x = 27,410.40

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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.