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Finding the Fourth Proportional to 25,312.64, 37,963.65 and 11,620.91

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Solution

The fourth proportional to 25,312.64, 37,963.65 and 11,620.91 is: 17,428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,312.64 : 37,963.65 = 11,620.91 : x
  2. Step 2: Convert to fraction form
    25,312.64/37,963.65 = 11,620.91/x
  3. Step 3: Cross multiply
    25,312.64x = 37,963.65 × 11,620.91
  4. Step 4: Simplify right side
    25,312.64x = 441,172,159.92
  5. Step 5: Solve for x
    x = 441,172,159.92/25,312.64
  6. Step 6: Final answer
    x = 17,428.93

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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.