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Finding the Fourth Proportional to 9,857,713.80, 14,786,570.70 and 9,479,800.20

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Solution

The fourth proportional to 9,857,713.80, 14,786,570.70 and 9,479,800.20 is: 14,219,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,857,713.80 : 14,786,570.70 = 9,479,800.20 : x
  2. Step 2: Convert to fraction form
    9,857,713.80/14,786,570.70 = 9,479,800.20/x
  3. Step 3: Cross multiply
    9,857,713.80x = 14,786,570.70 × 9,479,800.20
  4. Step 4: Simplify right side
    9,857,713.80x = 140,173,735,879,174.12
  5. Step 5: Solve for x
    x = 140,173,735,879,174.12/9,857,713.80
  6. Step 6: Final answer
    x = 14,219,700.30

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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.