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Finding the Fourth Proportional to 76,574.64, 114,744.72 and 51,521.88

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Solution

The fourth proportional to 76,574.64, 114,744.72 and 51,521.88 is: 77,203.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,574.64 : 114,744.72 = 51,521.88 : x
  2. Step 2: Convert to fraction form
    76,574.64/114,744.72 = 51,521.88/x
  3. Step 3: Cross multiply
    76,574.64x = 114,744.72 × 51,521.88
  4. Step 4: Simplify right side
    76,574.64x = 5,911,863,694.47
  5. Step 5: Solve for x
    x = 5,911,863,694.47/76,574.64
  6. Step 6: Final answer
    x = 77,203.94

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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.