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Finding the Fourth Proportional to 51,355.64, 70,869.47 and 28,694.82

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Solution

The fourth proportional to 51,355.64, 70,869.47 and 28,694.82 is: 39,598.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,355.64 : 70,869.47 = 28,694.82 : x
  2. Step 2: Convert to fraction form
    51,355.64/70,869.47 = 28,694.82/x
  3. Step 3: Cross multiply
    51,355.64x = 70,869.47 × 28,694.82
  4. Step 4: Simplify right side
    51,355.64x = 2,033,586,674.55
  5. Step 5: Solve for x
    x = 2,033,586,674.55/51,355.64
  6. Step 6: Final answer
    x = 39,598.11

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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.