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Finding the Fourth Proportional to 6,664,555.80, 9,996,833.70 and 6,139,675.80

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Solution

The fourth proportional to 6,664,555.80, 9,996,833.70 and 6,139,675.80 is: 9,209,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664,555.80 : 9,996,833.70 = 6,139,675.80 : x
  2. Step 2: Convert to fraction form
    6,664,555.80/9,996,833.70 = 6,139,675.80/x
  3. Step 3: Cross multiply
    6,664,555.80x = 9,996,833.70 × 6,139,675.80
  4. Step 4: Simplify right side
    6,664,555.80x = 61,377,317,944,514.45
  5. Step 5: Solve for x
    x = 61,377,317,944,514.45/6,664,555.80
  6. Step 6: Final answer
    x = 9,209,513.70

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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.