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Finding the Fourth Proportional to 69,586.64, 104,357.88 and 40,018.40

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Solution

The fourth proportional to 69,586.64, 104,357.88 and 40,018.40 is: 60,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,586.64 : 104,357.88 = 40,018.40 : x
  2. Step 2: Convert to fraction form
    69,586.64/104,357.88 = 40,018.40/x
  3. Step 3: Cross multiply
    69,586.64x = 104,357.88 × 40,018.40
  4. Step 4: Simplify right side
    69,586.64x = 4,176,235,384.99
  5. Step 5: Solve for x
    x = 4,176,235,384.99/69,586.64
  6. Step 6: Final answer
    x = 60,014.90

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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.