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Finding the Fourth Proportional to 45,521.84, 62,820.40 and 25,380

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Solution

The fourth proportional to 45,521.84, 62,820.40 and 25,380 is: 35,024.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,521.84 : 62,820.40 = 25,380 : x
  2. Step 2: Convert to fraction form
    45,521.84/62,820.40 = 25,380/x
  3. Step 3: Cross multiply
    45,521.84x = 62,820.40 × 25,380
  4. Step 4: Simplify right side
    45,521.84x = 1,594,381,752
  5. Step 5: Solve for x
    x = 1,594,381,752/45,521.84
  6. Step 6: Final answer
    x = 35,024.55

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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.