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Finding the Fourth Proportional to 38,994, 58,491 and 9,810

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Solution

The fourth proportional to 38,994, 58,491 and 9,810 is: 14,715

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,994 : 58,491 = 9,810 : x
  2. Step 2: Convert to fraction form
    38,994/58,491 = 9,810/x
  3. Step 3: Cross multiply
    38,994x = 58,491 × 9,810
  4. Step 4: Simplify right side
    38,994x = 573,796,710
  5. Step 5: Solve for x
    x = 573,796,710/38,994
  6. Step 6: Final answer
    x = 14,715

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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.