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Finding the Fourth Proportional to 13,286,211.40, 19,893,887.70 and 13,286,211.40

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Solution

The fourth proportional to 13,286,211.40, 19,893,887.70 and 13,286,211.40 is: 19,893,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286,211.40 : 19,893,887.70 = 13,286,211.40 : x
  2. Step 2: Convert to fraction form
    13,286,211.40/19,893,887.70 = 13,286,211.40/x
  3. Step 3: Cross multiply
    13,286,211.40x = 19,893,887.70 × 13,286,211.40
  4. Step 4: Simplify right side
    13,286,211.40x = 264,314,397,550,059.78
  5. Step 5: Solve for x
    x = 264,314,397,550,059.78/13,286,211.40
  6. Step 6: Final answer
    x = 19,893,887.70

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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.