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Finding the Fourth Proportional to 14,340,509.20, 20,091,642.80 and 14,340,509.20

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Solution

The fourth proportional to 14,340,509.20, 20,091,642.80 and 14,340,509.20 is: 20,091,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,340,509.20 : 20,091,642.80 = 14,340,509.20 : x
  2. Step 2: Convert to fraction form
    14,340,509.20/20,091,642.80 = 14,340,509.20/x
  3. Step 3: Cross multiply
    14,340,509.20x = 20,091,642.80 × 14,340,509.20
  4. Step 4: Simplify right side
    14,340,509.20x = 288,124,388,416,513.75
  5. Step 5: Solve for x
    x = 288,124,388,416,513.75/14,340,509.20
  6. Step 6: Final answer
    x = 20,091,642.80

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1.5x scale

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.