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Finding the Fourth Proportional to 18,825,709.12, 25,978,387.14 and 10,565,000.05

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Solution

The fourth proportional to 18,825,709.12, 25,978,387.14 and 10,565,000.05 is: 14,579,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825,709.12 : 25,978,387.14 = 10,565,000.05 : x
  2. Step 2: Convert to fraction form
    18,825,709.12/25,978,387.14 = 10,565,000.05/x
  3. Step 3: Cross multiply
    18,825,709.12x = 25,978,387.14 × 10,565,000.05
  4. Step 4: Simplify right side
    18,825,709.12x = 274,461,661,433,019.38
  5. Step 5: Solve for x
    x = 274,461,661,433,019.38/18,825,709.12
  6. Step 6: Final answer
    x = 14,579,087.55

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1.5x scale

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.