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Finding the Fourth Proportional to 21,921,347.40, 32,882,021.10 and 21,921,347.40

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Solution

The fourth proportional to 21,921,347.40, 32,882,021.10 and 21,921,347.40 is: 32,882,021.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921,347.40 : 32,882,021.10 = 21,921,347.40 : x
  2. Step 2: Convert to fraction form
    21,921,347.40/32,882,021.10 = 21,921,347.40/x
  3. Step 3: Cross multiply
    21,921,347.40x = 32,882,021.10 × 21,921,347.40
  4. Step 4: Simplify right side
    21,921,347.40x = 720,818,207,747,230.12
  5. Step 5: Solve for x
    x = 720,818,207,747,230.12/21,921,347.40
  6. Step 6: Final answer
    x = 32,882,021.10

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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.