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Finding the Fourth Proportional to 9,655,980.80, 14,485,720.80 and 4,851,579.20

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Solution

The fourth proportional to 9,655,980.80, 14,485,720.80 and 4,851,579.20 is: 7,278,247.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,655,980.80 : 14,485,720.80 = 4,851,579.20 : x
  2. Step 2: Convert to fraction form
    9,655,980.80/14,485,720.80 = 4,851,579.20/x
  3. Step 3: Cross multiply
    9,655,980.80x = 14,485,720.80 × 4,851,579.20
  4. Step 4: Simplify right side
    9,655,980.80x = 70,278,621,730,287.37
  5. Step 5: Solve for x
    x = 70,278,621,730,287.37/9,655,980.80
  6. Step 6: Final answer
    x = 7,278,247.87

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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.