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Finding the Fourth Proportional to 45,702.66, 63,096.90 and 28,721.28

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Solution

The fourth proportional to 45,702.66, 63,096.90 and 28,721.28 is: 39,652.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,702.66 : 63,096.90 = 28,721.28 : x
  2. Step 2: Convert to fraction form
    45,702.66/63,096.90 = 28,721.28/x
  3. Step 3: Cross multiply
    45,702.66x = 63,096.90 × 28,721.28
  4. Step 4: Simplify right side
    45,702.66x = 1,812,223,732.03
  5. Step 5: Solve for x
    x = 1,812,223,732.03/45,702.66
  6. Step 6: Final answer
    x = 39,652.48

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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.