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Finding the Fourth Proportional to 716,101.71, 988,223.29 and 393,832.23

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Solution

The fourth proportional to 716,101.71, 988,223.29 and 393,832.23 is: 543,490.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,101.71 : 988,223.29 = 393,832.23 : x
  2. Step 2: Convert to fraction form
    716,101.71/988,223.29 = 393,832.23/x
  3. Step 3: Cross multiply
    716,101.71x = 988,223.29 × 393,832.23
  4. Step 4: Simplify right side
    716,101.71x = 389,194,177,348.22
  5. Step 5: Solve for x
    x = 389,194,177,348.22/716,101.71
  6. Step 6: Final answer
    x = 543,490.08

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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.