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Finding the Fourth Proportional to 91,692,048.30, 137,538,072.45 and 91,692,048.30

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Solution

The fourth proportional to 91,692,048.30, 137,538,072.45 and 91,692,048.30 is: 137,538,072.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,692,048.30 : 137,538,072.45 = 91,692,048.30 : x
  2. Step 2: Convert to fraction form
    91,692,048.30/137,538,072.45 = 91,692,048.30/x
  3. Step 3: Cross multiply
    91,692,048.30x = 137,538,072.45 × 91,692,048.30
  4. Step 4: Simplify right side
    91,692,048.30x = 12,611,147,582,174,298
  5. Step 5: Solve for x
    x = 12,611,147,582,174,298/91,692,048.30
  6. Step 6: Final answer
    x = 137,538,072.45

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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.