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Finding the Fourth Proportional to 21,888,010.30, 30,693,602.90 and 21,888,010.30

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Solution

The fourth proportional to 21,888,010.30, 30,693,602.90 and 21,888,010.30 is: 30,693,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888,010.30 : 30,693,602.90 = 21,888,010.30 : x
  2. Step 2: Convert to fraction form
    21,888,010.30/30,693,602.90 = 21,888,010.30/x
  3. Step 3: Cross multiply
    21,888,010.30x = 30,693,602.90 × 21,888,010.30
  4. Step 4: Simplify right side
    21,888,010.30x = 671,821,896,419,309.88
  5. Step 5: Solve for x
    x = 671,821,896,419,309.88/21,888,010.30
  6. Step 6: Final answer
    x = 30,693,602.90

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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.