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Finding the Fourth Proportional to 12,618,244.30, 18,927,366.45 and 12,618,244.30

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Solution

The fourth proportional to 12,618,244.30, 18,927,366.45 and 12,618,244.30 is: 18,927,366.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618,244.30 : 18,927,366.45 = 12,618,244.30 : x
  2. Step 2: Convert to fraction form
    12,618,244.30/18,927,366.45 = 12,618,244.30/x
  3. Step 3: Cross multiply
    12,618,244.30x = 18,927,366.45 × 12,618,244.30
  4. Step 4: Simplify right side
    12,618,244.30x = 238,830,133,821,723.75
  5. Step 5: Solve for x
    x = 238,830,133,821,723.75/12,618,244.30
  6. Step 6: Final answer
    x = 18,927,366.45

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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.