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Finding the Fourth Proportional to 70,453.92, 105,681.52 and 56,378.96

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Solution

The fourth proportional to 70,453.92, 105,681.52 and 56,378.96 is: 84,568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,453.92 : 105,681.52 = 56,378.96 : x
  2. Step 2: Convert to fraction form
    70,453.92/105,681.52 = 56,378.96/x
  3. Step 3: Cross multiply
    70,453.92x = 105,681.52 × 56,378.96
  4. Step 4: Simplify right side
    70,453.92x = 5,958,214,188.82
  5. Step 5: Solve for x
    x = 5,958,214,188.82/70,453.92
  6. Step 6: Final answer
    x = 84,568.95

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1.5x scale

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.