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Finding the Fourth Proportional to 26,470.61, 39,697.50 and 8,697.18

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Solution

The fourth proportional to 26,470.61, 39,697.50 and 8,697.18 is: 13,043.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,470.61 : 39,697.50 = 8,697.18 : x
  2. Step 2: Convert to fraction form
    26,470.61/39,697.50 = 8,697.18/x
  3. Step 3: Cross multiply
    26,470.61x = 39,697.50 × 8,697.18
  4. Step 4: Simplify right side
    26,470.61x = 345,256,123.94
  5. Step 5: Solve for x
    x = 345,256,123.94/26,470.61
  6. Step 6: Final answer
    x = 13,043.00

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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.