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Finding the Fourth Proportional to 5,479,977.70, 7,684,565.90 and 5,479,977.70

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Solution

The fourth proportional to 5,479,977.70, 7,684,565.90 and 5,479,977.70 is: 7,684,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479,977.70 : 7,684,565.90 = 5,479,977.70 : x
  2. Step 2: Convert to fraction form
    5,479,977.70/7,684,565.90 = 5,479,977.70/x
  3. Step 3: Cross multiply
    5,479,977.70x = 7,684,565.90 × 5,479,977.70
  4. Step 4: Simplify right side
    5,479,977.70x = 42,111,249,766,180.43
  5. Step 5: Solve for x
    x = 42,111,249,766,180.43/5,479,977.70
  6. Step 6: Final answer
    x = 7,684,565.90

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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.