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Finding the Fourth Proportional to 13,657,246.65, 20,485,869.98 and 13,657,246.65

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Solution

The fourth proportional to 13,657,246.65, 20,485,869.98 and 13,657,246.65 is: 20,485,869.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657,246.65 : 20,485,869.98 = 13,657,246.65 : x
  2. Step 2: Convert to fraction form
    13,657,246.65/20,485,869.98 = 13,657,246.65/x
  3. Step 3: Cross multiply
    13,657,246.65x = 20,485,869.98 × 13,657,246.65
  4. Step 4: Simplify right side
    13,657,246.65x = 279,780,579,088,404.38
  5. Step 5: Solve for x
    x = 279,780,579,088,404.38/13,657,246.65
  6. Step 6: Final answer
    x = 20,485,869.98

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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.