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Finding the Fourth Proportional to 65,913.99, 98,870.16 and 15,994.50

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Solution

The fourth proportional to 65,913.99, 98,870.16 and 15,994.50 is: 23,991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,913.99 : 98,870.16 = 15,994.50 : x
  2. Step 2: Convert to fraction form
    65,913.99/98,870.16 = 15,994.50/x
  3. Step 3: Cross multiply
    65,913.99x = 98,870.16 × 15,994.50
  4. Step 4: Simplify right side
    65,913.99x = 1,581,378,774.12
  5. Step 5: Solve for x
    x = 1,581,378,774.12/65,913.99
  6. Step 6: Final answer
    x = 23,991.55

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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.