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Finding the Fourth Proportional to 74,805,428.80, 112,113,664.80 and 36,384,212.80

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Solution

The fourth proportional to 74,805,428.80, 112,113,664.80 and 36,384,212.80 is: 54,530,366.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,805,428.80 : 112,113,664.80 = 36,384,212.80 : x
  2. Step 2: Convert to fraction form
    74,805,428.80/112,113,664.80 = 36,384,212.80/x
  3. Step 3: Cross multiply
    74,805,428.80x = 112,113,664.80 × 36,384,212.80
  4. Step 4: Simplify right side
    74,805,428.80x = 4,079,167,437,871,069
  5. Step 5: Solve for x
    x = 4,079,167,437,871,069/74,805,428.80
  6. Step 6: Final answer
    x = 54,530,366.36

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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.