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Finding the Fourth Proportional to 22,019,820.70, 30,891,521.90 and 22,019,820.70

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Solution

The fourth proportional to 22,019,820.70, 30,891,521.90 and 22,019,820.70 is: 30,891,521.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,019,820.70 : 30,891,521.90 = 22,019,820.70 : x
  2. Step 2: Convert to fraction form
    22,019,820.70/30,891,521.90 = 22,019,820.70/x
  3. Step 3: Cross multiply
    22,019,820.70x = 30,891,521.90 × 22,019,820.70
  4. Step 4: Simplify right side
    22,019,820.70x = 680,225,773,388,123.25
  5. Step 5: Solve for x
    x = 680,225,773,388,123.25/22,019,820.70
  6. Step 6: Final answer
    x = 30,891,521.90

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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.