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Finding the Fourth Proportional to 74,880,123.80, 105,134,504.20 and 74,880,123.80

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Solution

The fourth proportional to 74,880,123.80, 105,134,504.20 and 74,880,123.80 is: 105,134,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,880,123.80 : 105,134,504.20 = 74,880,123.80 : x
  2. Step 2: Convert to fraction form
    74,880,123.80/105,134,504.20 = 74,880,123.80/x
  3. Step 3: Cross multiply
    74,880,123.80x = 105,134,504.20 × 74,880,123.80
  4. Step 4: Simplify right side
    74,880,123.80x = 7,872,484,690,147,620
  5. Step 5: Solve for x
    x = 7,872,484,690,147,620/74,880,123.80
  6. Step 6: Final answer
    x = 105,134,504.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.