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Finding the Fourth Proportional to 13,886,656.60, 19,393,489.55 and 13,886,656.60

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Solution

The fourth proportional to 13,886,656.60, 19,393,489.55 and 13,886,656.60 is: 19,393,489.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886,656.60 : 19,393,489.55 = 13,886,656.60 : x
  2. Step 2: Convert to fraction form
    13,886,656.60/19,393,489.55 = 13,886,656.60/x
  3. Step 3: Cross multiply
    13,886,656.60x = 19,393,489.55 × 13,886,656.60
  4. Step 4: Simplify right side
    13,886,656.60x = 269,310,729,656,538.53
  5. Step 5: Solve for x
    x = 269,310,729,656,538.53/13,886,656.60
  6. Step 6: Final answer
    x = 19,393,489.55

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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.