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Finding the Fourth Proportional to 392,393,893.03, 541,528,031.78 and 216,181,851.93

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Solution

The fourth proportional to 392,393,893.03, 541,528,031.78 and 216,181,851.93 is: 298,344,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,393,893.03 : 541,528,031.78 = 216,181,851.93 : x
  2. Step 2: Convert to fraction form
    392,393,893.03/541,528,031.78 = 216,181,851.93/x
  3. Step 3: Cross multiply
    392,393,893.03x = 541,528,031.78 × 216,181,851.93
  4. Step 4: Simplify right side
    392,393,893.03x = 117,068,532,782,208,288
  5. Step 5: Solve for x
    x = 117,068,532,782,208,288/392,393,893.03
  6. Step 6: Final answer
    x = 298,344,431.10

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