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Finding the Fourth Proportional to 4,895,978.10, 6,756,315.50 and 2,720,465.40

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Solution

The fourth proportional to 4,895,978.10, 6,756,315.50 and 2,720,465.40 is: 3,754,167.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,895,978.10 : 6,756,315.50 = 2,720,465.40 : x
  2. Step 2: Convert to fraction form
    4,895,978.10/6,756,315.50 = 2,720,465.40/x
  3. Step 3: Cross multiply
    4,895,978.10x = 6,756,315.50 × 2,720,465.40
  4. Step 4: Simplify right side
    4,895,978.10x = 18,380,322,549,233.70
  5. Step 5: Solve for x
    x = 18,380,322,549,233.70/4,895,978.10
  6. Step 6: Final answer
    x = 3,754,167.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.