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Finding the Fourth Proportional to 13,207,967.30, 19,780,458.15 and 13,207,967.30

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Solution

The fourth proportional to 13,207,967.30, 19,780,458.15 and 13,207,967.30 is: 19,780,458.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207,967.30 : 19,780,458.15 = 13,207,967.30 : x
  2. Step 2: Convert to fraction form
    13,207,967.30/19,780,458.15 = 13,207,967.30/x
  3. Step 3: Cross multiply
    13,207,967.30x = 19,780,458.15 × 13,207,967.30
  4. Step 4: Simplify right side
    13,207,967.30x = 261,259,644,424,218.50
  5. Step 5: Solve for x
    x = 261,259,644,424,218.50/13,207,967.30
  6. Step 6: Final answer
    x = 19,780,458.15

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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.