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Finding the Fourth Proportional to 10,082,620.80, 15,123,931.20 and 10,082,620.80

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Solution

The fourth proportional to 10,082,620.80, 15,123,931.20 and 10,082,620.80 is: 15,123,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,082,620.80 : 15,123,931.20 = 10,082,620.80 : x
  2. Step 2: Convert to fraction form
    10,082,620.80/15,123,931.20 = 10,082,620.80/x
  3. Step 3: Cross multiply
    10,082,620.80x = 15,123,931.20 × 10,082,620.80
  4. Step 4: Simplify right side
    10,082,620.80x = 152,488,863,294,888.97
  5. Step 5: Solve for x
    x = 152,488,863,294,888.97/10,082,620.80
  6. Step 6: Final answer
    x = 15,123,931.20

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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.