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Finding the Fourth Proportional to 716,093.16, 988,233.92 and 393,828.20

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Solution

The fourth proportional to 716,093.16, 988,233.92 and 393,828.20 is: 543,496.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,093.16 : 988,233.92 = 393,828.20 : x
  2. Step 2: Convert to fraction form
    716,093.16/988,233.92 = 393,828.20/x
  3. Step 3: Cross multiply
    716,093.16x = 988,233.92 × 393,828.20
  4. Step 4: Simplify right side
    716,093.16x = 389,194,385,892.54
  5. Step 5: Solve for x
    x = 389,194,385,892.54/716,093.16
  6. Step 6: Final answer
    x = 543,496.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.