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Finding the Fourth Proportional to 22,019,903.70, 30,891,638.10 and 22,019,903.70

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Solution

The fourth proportional to 22,019,903.70, 30,891,638.10 and 22,019,903.70 is: 30,891,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,019,903.70 : 30,891,638.10 = 22,019,903.70 : x
  2. Step 2: Convert to fraction form
    22,019,903.70/30,891,638.10 = 22,019,903.70/x
  3. Step 3: Cross multiply
    22,019,903.70x = 30,891,638.10 × 22,019,903.70
  4. Step 4: Simplify right side
    22,019,903.70x = 680,230,896,097,251
  5. Step 5: Solve for x
    x = 680,230,896,097,251/22,019,903.70
  6. Step 6: Final answer
    x = 30,891,638.10

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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.