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Finding the Fourth Proportional to 70,334.99, 105,561.50 and 65,901.30

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Solution

The fourth proportional to 70,334.99, 105,561.50 and 65,901.30 is: 98,907.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,334.99 : 105,561.50 = 65,901.30 : x
  2. Step 2: Convert to fraction form
    70,334.99/105,561.50 = 65,901.30/x
  3. Step 3: Cross multiply
    70,334.99x = 105,561.50 × 65,901.30
  4. Step 4: Simplify right side
    70,334.99x = 6,956,639,948.37
  5. Step 5: Solve for x
    x = 6,956,639,948.37/70,334.99
  6. Step 6: Final answer
    x = 98,907.24

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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.