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Finding the Fourth Proportional to 45,803.76, 68,715.42 and 14,213.13

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Solution

The fourth proportional to 45,803.76, 68,715.42 and 14,213.13 is: 21,322.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,803.76 : 68,715.42 = 14,213.13 : x
  2. Step 2: Convert to fraction form
    45,803.76/68,715.42 = 14,213.13/x
  3. Step 3: Cross multiply
    45,803.76x = 68,715.42 × 14,213.13
  4. Step 4: Simplify right side
    45,803.76x = 976,660,853.89
  5. Step 5: Solve for x
    x = 976,660,853.89/45,803.76
  6. Step 6: Final answer
    x = 21,322.72

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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.